OBD2 Codes List PDF Free Download: Your Ultimate Guide to Decoding Car Trouble

Navigating the complexities of modern vehicle diagnostics can be daunting, especially when the check engine light illuminates on your dashboard. This warning light is your car’s way of communicating that something isn’t quite right. The key to understanding these warnings lies in OBD2 codes, standardized codes that your vehicle’s computer system uses to report issues. Having a comprehensive OBD2 codes list at your fingertips can be invaluable for car owners and auto repair professionals alike.

This article provides an in-depth look at OBD2 codes, offering a detailed list and explaining how to use this information effectively. For easy access and offline use, we also discuss how to find an “Obd2 Codes List Pdf Free Download”, making this essential diagnostic information readily available.

Understanding OBD2 Codes: The Language of Your Vehicle

OBD2, or On-Board Diagnostics II, is a standardized system used in most vehicles manufactured after 1996. Its primary function is to monitor the performance of your engine, emissions system, and other critical components. When the system detects a problem, it generates a Diagnostic Trouble Code (DTC), commonly known as an OBD2 code.

These codes are not arbitrary; they follow a specific format and structure, providing clues about the nature and location of the fault. Understanding the anatomy of an OBD2 code can significantly aid in diagnosing and addressing vehicle problems. Typically, an OBD2 code is a five-character alphanumeric code.

  • First Character: Indicates the system affected:
    • P: Powertrain (engine and transmission)
    • B: Body (components inside the passenger compartment)
    • C: Chassis (mechanical systems and functions)
    • U: Network & Vehicle Integration (communication network)
  • Second Character: Specifies the code type:
    • 0: Generic (SAE standard codes common to all manufacturers)
    • 1, 2, 3: Manufacturer-specific (enhanced codes unique to a particular automaker)
  • Third Character: Denotes the subsystem:
    • 0: Fuel and Air Metering and Auxiliary Emission Controls
    • 1: Fuel and Air Metering
    • 2: Fuel and Air Metering – Injector Circuit
    • 3: Ignition System or Misfire
    • 4: Auxiliary Emission Controls
    • 5: Vehicle Speed Controls and Idle Control System
    • 6: Computer Output Circuit
    • 7, 8, 9: Transmission
  • Fourth and Fifth Characters: Specific problem number, providing further detail about the fault.

For example, a code like P0301 breaks down as follows:

  • P: Powertrain
  • 0: Generic
  • 3: Ignition System or Misfire
  • 01: Cylinder 1 Misfire Detected

This structured approach allows mechanics and car owners to systematically diagnose issues using an OBD2 scanner and a comprehensive OBD2 codes list.

Your Comprehensive OBD2 Codes List: Powertrain (P-Codes)

The following is a detailed list of Powertrain (P-codes) OBD2 codes. Powertrain codes are the most common and relate to the engine, transmission, and related emission control systems. This list provides the code and a brief description to help you understand potential issues.

P0000-P0099: Fuel and Air Metering and Auxiliary Emission Controls

  • P0000: No trouble code
  • P0001: Fuel Volume Regulator Control Circuit / Open
  • P0002: Fuel Volume Regulator Control Circuit Range/Performance
  • P0003: Fuel Volume Regulator Control Circuit Low
  • P0004: Fuel Volume Regulator Control Circuit High
  • P0005: Fuel Shutoff Valve Control Circuit / Open
  • P0006: Fuel Shutoff Valve Control Circuit Low
  • P0007: Fuel Shutoff Valve Control Circuit High
  • P0008: Engine Position System Performance – Bank 2
  • P0009: Engine Position System Performance – Bank 2
  • P0010: Intake Camshaft Position Actuator Circuit / Open (Bank 2)
  • P0011: Intake Camshaft Position Timing – Over-Advanced (Bank 2)
  • P0012: Intake Camshaft Position Timing – Over-Retarded (Bank 2)
  • P0013: Exhaust Camshaft Position Actuator Circuit / Open (Bank 2)
  • P0014: Exhaust Camshaft Position Timing – Over-Advanced (Bank 2)
  • P0015: Exhaust Camshaft Position Timing – Over-Retarded (Bank 2)
  • P0016: Crankshaft Position Camshaft Position Correlation Bank 2 Sensor A
  • P0017: Crankshaft Position Camshaft Position Correlation Bank 2 Sensor B
  • P0018: Crankshaft Position Camshaft Position Correlation Bank 2 Sensor A
  • P0019: Crankshaft Position Camshaft Position Correlation Bank 2 Sensor B
  • P0020: Intake Camshaft Position Actuator Circuit / Open (Bank 2)
  • P0021: Intake Camshaft Position Timing – Over-Advanced (Bank 2)
  • P0022: Intake Camshaft Position Timing – Over-Retarded (Bank 2)
  • P0023: Exhaust Camshaft Position Actuator Circuit / Open (Bank 2)
  • P0024: Exhaust Camshaft Position Timing – Over-Advanced (Bank 2)
  • P0025: Exhaust Camshaft Position Timing – Over-Retarded (Bank 2)
  • P0026: Intake Valve Control Solenoid Circuit Range/Performance (Bank 2)
  • P0027: Exhaust Valve Control Solenoid Circuit Range/Performance (Bank 2)
  • P0028: Intake Valve Control Solenoid Circuit Range/Performance (Bank 2)
  • P0029: Exhaust Valve Control Solenoid Circuit Range/Performance (Bank 2)
  • P0030: Heated Oxygen Sensor (H02S) Heater Control Circuit Bank 2 Sensor 1
  • P0031: Heated Oxygen Sensor (HO2S) Heater Circuit Low Voltage Bank 2 Sensor 1
  • P0032: Heated Oxygen Sensor (HO2S) Heater Circuit High Voltage Bank 2 Sensor 1
  • P0033: Turbo/Super Charger Bypass Valve Control Circuit / Open
  • P0034: Turbo/Super Charger Bypass Valve Control Circuit Low
  • P0035: Turbo/Super Charger Bypass Valve Control Circuit High
  • P0036: Heated Oxygen Sensor (HO2S) Heater Control Circuit Bank 2 Sensor 2
  • P0037: Heated Oxygen Sensor (HO2S) Heater Circuit Low Voltage Bank 2 Sensor 2
  • P0038: Heated Oxygen Sensor (HO2S) Heater Circuit High Voltage Bank 2 Sensor 2
  • P0039: Turbo/Super Charger Bypass Valve Control Circuit Range/Performance
  • P0040: Oxygen Sensor Signals Swapped Bank 2 Sensor 1 / Bank 2 Sensor 1
  • P0041: Oxygen Sensor Signals Swapped Bank 2 Sensor 2 / Bank 2 Sensor 2
  • P0042: HO2S Heater Control Circuit (Bank 2, Sensor 3)
  • P0043: HO2S Heater Control Circuit Low (Bank 2, Sensor 3)
  • P0044: HO2S Heater Control Circuit High (Bank 2, Sensor 3)
  • P0046: Turbo/Super Charger Boost Control Solenoid Circuit / Open
  • P0046: Turbo/Super Charger Boost Control Solenoid Circuit Range/Performance
  • P0047: Turbo/Super Charger Boost Control Solenoid Circuit Low
  • P0048: Turbo/Super Charger Boost Control Solenoid Circuit High
  • P0049: Turbo/Super Charger Turbine Overspeed
  • P0050: Heated Oxygen Sensor (HO2S) Heater Circuit Bank 2 Sensor 1
  • P0051: Heated Oxygen Sensor (HO2S) Heater Circuit Low Voltage Bank 2 Sensor 1
  • P0052: Heated Oxygen Sensor (HO2S) Heater Circuit High Voltage Bank 2 Sensor 1
  • P0053: HO2S Heater Resistance Bank 2 Sensor 1 (PCM)
  • P0054: HO2S Heater Resistance Bank 2 Sensor 2 (PCM)
  • P0055: HO2S Heater Resistance Bank 2 Sensor 3 (PCM)
  • P0056: Heated Oxygen Sensor (HO2S) Heater Circuit Bank 2 Sensor 2
  • P0057: Heated Oxygen Sensor (HO2S) Heater Circuit Low Voltage Bank 2 Sensor 2
  • P0058: Heated Oxygen Sensor (HO2S) Heater Circuit High Voltage Bank 2 Sensor 2
  • P0059: HO2S Heater Resistance (Bank 2, Sensor 1)
  • P0060: HO2S Heater Resistance (Bank 2, Sensor 2)
  • P0061: HO2S Heater Resistance (Bank 2, Sensor 3)
  • P0062: HO2S Heater Control Circuit (Bank 2, Sensor 3)
  • P0063: HO2S Heater Control Circuit Low (Bank 2, Sensor 3)
  • P0064: HO2S Heater Control Circuit High (Bank 2, Sensor 3)
  • P0065: Air Assisted Injector Control Range/Performance
  • P0066: Air Assisted Injector Control Circuit or Circuit Low
  • P0067: Air Assisted Injector Control Circuit or Circuit High
  • P0068: MAP / MAF – Throttle Position Correlation
  • P0069: MAP – Barometric Pressure Correlation
  • P0070: Ambient Air Temperature Sensor Circuit
  • P0071: Ambient Air Temperature Sensor Range/Performance
  • P0072: Ambient Air Temperature Sensor Circuit Low Input
  • P0073: Ambient Air Temperature Sensor Circuit High Input
  • P0074: Ambient Air Temperature Sensor Circuit Intermittent/Erratic
  • P0075: Intake Valve Control Circuit (Bank 2)
  • P0076: Intake Valve Control Circuit Low (Bank 2)
  • P0077: Intake Valve Control Circuit High (Bank 2)
  • P0078: Exhaust Valve Control Circuit (Bank 2)
  • P0079: Exhaust Valve Control Circuit Low (Bank 2)
  • P0080: Exhaust Valve Control Circuit High (Bank 2)
  • P0081: Intake Valve Control Circuit (Bank 2)
  • P0082: Intake Valve Control Circuit Low (Bank 2)
  • P0083: Intake Valve Control Circuit High (Bank 2)
  • P0084: Exhaust Valve Control Circuit (Bank 2)
  • P0085: Exhaust Valve Control Circuit Low (Bank 2)
  • P0086: Exhaust Valve Control Circuit High (Bank 2)
  • P0087: Fuel Rail/System Pressure – Too Low
  • P0088: Fuel Rail/System Pressure – Too High
  • P0089: Fuel Pressure Regulator Performance
  • P0090: Fuel Pressure Regulator Control Circuit
  • P0091: Fuel Pressure Regulator Control Circuit Low
  • P0092: Fuel Pressure Regulator Control Circuit High
  • P0093: Fuel System Leak Detected – Large Leak
  • P0094: Fuel System Leak Detected – Small Leak
  • P0095: Intake Air Temperature Sensor 2 Circuit
  • P0096: Intake Air Temperature Sensor 2 Circuit Range/Performance
  • P0097: Intake Air Temperature Sensor 2 Circuit Low Input
  • P0098: Intake Air Temperature Sensor 2 Circuit High Input
  • P0099: Intake Air Temperature Sensor 2 Circuit Intermittent/Erratic

P0100-P0199: Fuel and Air Metering

  • P0100: Mass or Volume Air flow Circuit Malfunction
  • P0101: Mass or Volume Air flow Circuit Range/Performance Problem
  • P0102: Mass or Volume Air Flow Circuit low Input
  • P0103: Mass or Volume Air flow Circuit High Input
  • P0104: Mass or Volume Air flow Circuit Intermittent
  • P0105: Manifold Absolute Pressure/Barometric Pressure Circuit Malfunction
  • P0106: Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance Problem
  • P0107: Manifold Absolute Pressure/Barometric Pressure Circuit Low Input
  • P0108: Manifold Absolute Pressure/Barometric Pressure Circuit High Input
  • P0109: Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent
  • P0110: Intake Air Temperature Circuit Malfunction More details…
  • P0111: Intake Air Temperature Circuit Range/Performance Problem
  • P0112: Intake Air Temperature Circuit Low Input
  • P0113: Intake Air Temperature Circuit High Input
  • P0114: Intake Air Temperature Circuit Intermittent
  • P0115: Engine Coolant Temperature Circuit Malfunction
  • P0116: Engine Coolant Temperature Circuit Range/Performance Problem
  • P0117: Engine Coolant Temperature Circuit Low Input
  • P0118: Engine Coolant Temperature Circuit High Input
  • P0119: Engine Coolant Temperature Circuit Intermittent
  • P0120: Throttle Pedal Position Sensor/Switch A Circuit Malfunction
  • P0121: Throttle/Pedal Position Sensor/Switch A Circuit Range/Performance Problem
  • P0122: Throttle/Pedal Position Sensor/Switch A Circuit Low Input
  • P0123: Throttle/Pedal Position Sensor/Switch A Circuit High Input
  • P0124: Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
  • P0125: Insufficient Coolant Temperature for Closed Loop Fuel Control
  • P0126: Insufficient Coolant Temperature for Stable Operation
  • P0127: Intake Air Temperature Too High
  • P0128: Coolant Thermostat (Coolant Temp Below Thermostat Regulating Temperature)
  • P0129: Barometric Pressure Too Low
  • P0130: O2 Sensor Circuit Malfunction (Bank 2 Sensor 1)
  • P0131: O2 Sensor Circuit Low Voltage (Bank 2 Sensor 1)
  • P0132: O2 Sensor Circuit High Voltage (Bank 2 Sensor 1)
  • P0133: O2 Sensor Circuit Slow Response (Bank 2 Sensor 1)
  • P0134: O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 1)
  • P0135: O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 1)
  • P0136: O2 Sensor Circuit Malfunction (Bank 1 Sensor 2)
  • P0137: O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)
  • P0138: O2 Sensor Circuit High Voltage (Bank 1 Sensor 2)
  • P0139: O2 Sensor Circuit Slow Response (Bank 1 Sensor 2)
  • P0140: O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 2)
  • P0141: O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 2)
  • P0142: O2 Sensor Circuit Malfunction (Bank 2 Sensor 3)
  • P0143: O2 Sensor Circuit Low Voltage (Bank 2 Sensor 3)
  • P0144: O2 Sensor Circuit High Voltage (Bank 2 Sensor 3)
  • P0145: O2 Sensor Circuit Slow Response (Bank 2 Sensor 3)
  • P0146: O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 3)
  • P0147: O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 3)
  • P0148: Fuel Delivery Error
  • P0149: Fuel Timing Error
  • P0150: O2 Sensor Circuit Malfunction (Bank 2 Sensor 1)
  • P0151: O2 Sensor Circuit Low Voltage (Bank 2 Sensor 1)
  • P0152: O2 Sensor Circuit High Voltage (Bank 2 Sensor 1)
  • P0153: O2 Sensor Circuit Slow Response (Bank 2 Sensor 1)
  • P0154: O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 1)
  • P0155: O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 1)
  • P0156: O2 Sensor Circuit Malfunction (Bank 2 Sensor 2)
  • P0157: O2 Sensor Circuit Low Voltage (Bank 2 Sensor 2)
  • P0158: O2 Sensor Circuit High Voltage (Bank 2 Sensor 2)
  • P0159: O2 Sensor Circuit Slow Response (Bank 2 Sensor 2)
  • P0160: O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 2)
  • P0161: O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 2)
  • P0162: O2 Sensor Circuit Malfunction (Bank 2 Sensor 3)
  • P0163: O2 Sensor Circuit Low Voltage (Bank 2 Sensor 3)
  • P0164: O2 Sensor Circuit High Voltage (Bank 2 Sensor 3)
  • P0165: O2 Sensor Circuit Slow Response (Bank 2 Sensor 3)
  • P0166: O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 3)
  • P0167: O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 3)
  • P0168: Engine Fuel Temperature Too High
  • P0169: Incorrect Fuel Composition
  • P0170: Fuel Trim Malfunction (Bank 2)
  • P0171: System Too Lean (Bank 2)
  • P0172: System Too Rich (Bank 2)
  • P0173: Fuel Trim Malfunction (Bank 2)
  • P0174: System Too Lean (Bank 2)
  • P0175: System Too Rich (Bank 2)
  • P0176: Fuel Composition Sensor Circuit Malfunction
  • P0177: Fuel Composition Sensor Circuit Range/Performance
  • P0178: Fuel Composition Sensor Circuit Low Input
  • P0179: Fuel Composition Sensor Circuit High Input
  • P0180: Fuel Temperature Sensor A Circuit Malfunction
  • P0181: Fuel Temperature Sensor A Circuit Performance
  • P0182: Fuel Temperature Sensor A Circuit low Input
  • P0183: Fuel Temperature Sensor A Circuit Intermittent
  • P0184: Fuel Temperature Sensor A Circuit Intermittent
  • P0185: Fuel Temperature Sensor B Circuit Malfunction
  • P0186: Fuel Temperature Sensor B Circuit Range/Performance
  • P0187: Fuel Temperature Sensor B Circuit Low Input
  • P0188: Fuel Temperature Sensor B Circuit High Input
  • P0189: Fuel Temperature Sensor B Circuit Intermittent
  • P0190: Fuel Rail Pressure Sensor Circuit Malfunction
  • P0191: Fuel Rail Pressure Sensor Circuit Range/Performance
  • P0192: Fuel Rail Pressure Sensor Circuit Low Input
  • P0193: Fuel Rail Pressure Sensor Circuit High Input
  • P0194: Fuel Rail Pressure Sensor Circuit Intermittent
  • P0195: Engine Oil Temperature Sensor Malfunction
  • P0196: Engine Oil Temperature Sensor Range/Performance
  • P0197: Engine Oil Temperature Sensor Low
  • P0198: Engine Oil Temperature Sensor High
  • P0199: Engine Oil Temperature Sensor Intermittent

P0200-P0299: Fuel and Air Metering – Injector Circuit

  • P0200: Injector Circuit Malfunction
  • P0201: Injector Circuit Malfunction – Cylinder 1
  • P0202: Injector Circuit Malfunction – Cylinder 2
  • P0203: Injector Circuit Malfunction – Cylinder 3
  • P0204: Injector Circuit Malfunction – Cylinder 4
  • P0205: Injector Circuit Malfunction – Cylinder 5
  • P0206: Injector Circuit Malfunction – Cylinder 6
  • P0207: Injector Circuit Malfunction – Cylinder 7
  • P0208: Injector Circuit Malfunction – Cylinder 8
  • P0209: Injector Circuit Malfunction – Cylinder 9
  • P0210: Injector Circuit Malfunction – Cylinder 10
  • P0211: Injector Circuit Malfunction – Cylinder 11
  • P0212: Injector Circuit Malfunction – Cylinder 12
  • P0213: Cold Start Injector 1 Malfunction
  • P0214: Cold Start Injector 2 Malfunction
  • P0215: Engine Shutoff Solenoid Malfunction
  • P0216: Injection Timing Control Circuit Malfunction
  • P0217: Engine Overtemp Condition
  • P0218: Transmission Over Temperature Condition
  • P0219: Engine Over Speed Condition
  • P0220: Throttle/Pedal Position Sensor/Switch B Circuit Malfunction
  • P0221: Throttle/Pedal Position Sensor/Switch B Circuit Range/Performance Problem
  • P0222: Throttle/Pedal Position Sensor/Switch B Circuit Low Input
  • P0223: Throttle/Pedal Position Sensor/Switch B Circuit High Input
  • P0224: Throttle/Pedal Position Sensor/Switch B Circuit Intermittent
  • P0225: Throttle/Pedal Position Sensor/Switch C Circuit Malfunction
  • P0226: Throttle/Pedal Position Sensor/Switch C Circuit Range/Performance Problem
  • P0227: Throttle/Pedal Position Sensor/Switch C Circuit Low Input
  • P0228: Throttle/Pedal Position Sensor/Switch C Circuit High Input
  • P0229: Throttle/Pedal Position Sensor/Switch C Circuit Intermittent
  • P0230: Fuel Pump Primary Circuit Malfunction
  • P0231: Fuel Pump Secondary Circuit Low
  • P0232: Fuel Pump Secondary Circuit Intermittent
  • P0233: Fuel Pump Secondary Circuit Intermittent
  • P0234: Engine Overboost Condition
  • P0235: Turbocharger Boost Sensor A Circuit Malfunction
  • P0236: Turbocharger Boost Sensor A Circuit Range/Performance.
  • P0237: Turbocharger Boost Sensor A Circuit Low
  • P0238: Turbocharger Boost Sensor A Circuit High
  • P0239: Turbocharger Boost Sensor B Circuit Malfunction
  • P0240: Turbocharger Boost Sensor B Circuit Range/Performance
  • P0241: Turbocharger Boost Sensor B Circuit Low
  • P0242: Turbocharger Boost Sensor B Circuit High
  • P0243: Turbocharger Wastegate Solenoid A Malfunction
  • P0244: Turbocharger Wastegate Solenoid A Range/Performance
  • P0245: Turbocharger Wastegate Solenoid A low
  • P0246: Turbocharger Wastegate Solenoid A High
  • P0247: Turbocharger Wastegate Solenoid B Malfunction
  • P0248: Turbocharger Wastegate Solenoid B Range/Performance
  • P0249: Turbocharger Wastegate Solenoid B Low
  • P0250: Turbocharger Wastegate Solenoid B High
  • P0251: Injection Pump Fuel Metering Control A Malfunction (Cam/Rotor/Injector)
  • P0252: Injection Pump Fuel Metering Control A Range/Performance (Cam/Rotor/Injector)
  • P0253: Injection Pump Fuel Metering Control A Low (Cam/Rotor/Injector)
  • P0254: Injection Pump Fuel Metering Control A High (Cam/Rotor/Injector)
  • P0255: Injection Pump Fuel Metering Control A Intermittent (Cam/Rotor/Injector)
  • P0256: Injection Pump Fuel Metering Control B Malfunction (Cam/Rotor/Injector)
  • P0257: Injection Pump Fuel Metering Control B Low (Cam/Rotor/Injector)
  • P0258: Injection Pump Fuel Metering Control B Low (Cam/Rotor/Injector)
  • P0259: Injection lump Fuel Metering Control B High (Cam/Rotor/Injector)
  • P0260: Injection Pump Fuel Metering Control B Intermittent (Cam/Rotor/Injector)
  • P0261: Cylinder 1 Injector Circuit Low
  • P0262: Cylinder 1 Injector Circuit High
  • P0263: Cylinder 1 Contribution/Balance Fault
  • P0264: Cylinder 2 Injector Circuit Low
  • P0265: Cylinder 2 Injector Circuit High
  • P0266: Cylinder 2 Contribution/Balance Fault
  • P0267: Cylinder 3 Injector Circuit Low
  • P0268: Cylinder 3 Injector Circuit High
  • P0269: Cylinder 3 Contribution/Balance Fault
  • P0270: Cylinder 4 Injector Circuit Low
  • P0271: Cylinder 4 Injector Circuit High
  • P0272: Cylinder 4 Contribution/Balance Fault
  • P0273: Cylinder 5 Injector Circuit Low
  • P0274: Cylinder 5 Injector Circuit High
  • P0275: Cylinder 5 Contribution/Balance Fault
  • P0276: Cylinder 6 Injector Circuit Low
  • P0277: Cylinder 6 Injector Circuit High
  • P0278: Cylinder 6 Contribution/Balance Fault
  • P0279: Cylinder 7 Injector Circuit Low
  • P0280: Cylinder 7 Injector Circuit High
  • P0281: Cylinder 7 Contribution/Balance Fault
  • P0282: Cylinder 8 Injector Circuit Low
  • P0283: Cylinder 8 Injector Circuit High
  • P0284: Cylinder 8 Contribution/Balance Fault
  • P0285: Cylinder 9 Injector Circuit Low
  • P0286: Cylinder 9 Injector Circuit High
  • P0287: Cylinder 9 Contribution/Balance Fault
  • P0288: Cylinder 10 Injector Circuit Low
  • P0289: Cylinder 10 Injector Circuit High
  • P0290: Cylinder 10 Contribution/Balance Fault
  • P0291: Cylinder 11 Injector Circuit Low
  • P0292: Cylinder 11 Injector Circuit High
  • P0293: Cylinder 11 Contribution/Balance Fault
  • P0294: Cylinder 12 Injector Circuit Low
  • P0295: Cylinder 12 Injector Circuit High
  • P0296: Cylinder 12 Contribution/Balance Fault
  • P0297: Vehicle Overspeed Condition
  • P0298: Engine Oil Over Temperature
  • P0299: Turbo / Super Charger Underboost

P0300-P0399: Ignition System or Misfire

  • P0300: Random/Multiple Cylinder Misfire Detected
  • P0301: Cylinder 1 Misfire Detected More details…
  • P0302: Cylinder 2 Misfire Detected More details…
  • P0303: Cylinder 3 Misfire Detected More details…
  • P0304: Cylinder 4 Misfire Detected More details…
  • P0305: Cylinder 5 Misfire Detected
  • P0306: Cylinder 6 Misfire Detected
  • P0307: Cylinder 7 Misfire Detected
  • P0308: Cylinder 8 Misfire Detected
  • P0309: Cylinder 9 Misfire Detected
  • P0310: Cylinder 10 Misfire Detected
  • P0311: Cylinder 11 Misfire Detected
  • P0312: Cylinder 12 Misfire Detected
  • P0313: Misfire Detected with Low Fuel
  • P0314: Single Cylinder Misfire (Cylinder not Specified)
  • P0315: Crankshaft Position System Variation Not Learned
  • P0316: Misfire Detected On Startup (First 1000 Revolutions)
  • P0317: Rough Road Hardware Not Present
  • P0318: Rough Road Sensor A Signal Circuit
  • P0319: Rough Road Sensor B Signal Circuit
  • P0320: Ignition/Distributor Engine Speed Input Circuit Malfunction
  • P0321: Ignition/Distributor Engine Speed Input Circuit Range/Performance
  • P0322: Ignition/Distributor Engine Speed Input Circuit No Signal
  • P0323: Ignition/Distributor Engine Speed Input Circuit Intermittent
  • P0324: Single Cylinder Misfire (Cylinder not Specified)
  • P0325: Knock Sensor 1 Circuit (Bank 2 or Single Sensor)
  • P0326: Knock Sensor 1 Circuit Range/Performance (Bank 2 or Single Sensor)
  • P0327: Knock Sensor 1 Circuit low Input (Bank 2 or Single Sensor)
  • P0328: Knock Sensor 1 Circuit High Input (Bank 2 or Single Sensor)
  • P0329: Knock Sensor 1 Circuit Input Intermittent (Bank 2 or Single Sensor)
  • P0330: Knock Sensor 2 Circuit (Bank 2)
  • P0331: Knock Sensor 2 Circuit Range/Performance (Bank 2)
  • P0332: Knock Sensor 2 Circuit Low Input (Bank 2)
  • P0333: Knock Sensor 2 Circuit High Input (Bank 2)
  • P0334: Knock Sensor 2 Circuit Input Intermittent (Bank 2)
  • P0335: Crankshaft Position Sensor A Circuit Malfunction
  • P0336: Crankshaft Position Sensor A Circuit Range/Performance
  • P0337: Crankshaft Position Sensor A Circuit Low Input
  • P0338: Crankshaft Position Sensor A Circuit High Input
  • P0339: Crankshaft Position Sensor A Circuit Intermittent
  • P0340: Camshaft Position Sensor Circuit Malfunction
  • P0341: Camshaft Position Sensor Circuit Range/Performance
  • P0342: Camshaft Position Sensor Circuit Low Input
  • P0343: Camshaft Position Sensor Circuit High Input
  • P0344: Camshaft Position Sensor Circuit Intermittent
  • P0345: Camshaft Position Sensor A Circuit (Bank 2)
  • P0346: Camshaft Position Sensor A Circuit Range/Performance (Bank 2)
  • P0347: Camshaft Position Sensor A Circuit Low Input (Bank 2)
  • P0348: Camshaft Position Sensor A Circuit High Input (Bank 2)
  • P0349: Camshaft Position Sensor A Circuit Intermittent (Bank 2)
  • P0350: Ignition Coil Primary/Secondary Circuit Malfunction
  • P0351: Ignition Coil A Primary/Secondary Circuit Malfunction
  • P0352: Ignition Coil B Primary/Secondary Circuit Malfunction
  • P0353: Ignition Coil C Primary/Secondary Circuit Malfunction
  • P0354: Ignition Coil D Primary/Secondary Circuit Malfunction
  • P0355: Ignition Coil E Primary/Secondary Circuit Malfunction
  • P0356: Ignition Coil F Primary/Secondary Circuit Malfunction
  • P0357: Ignition Coil G Primary/Secondary Circuit Malfunction
  • P0358: Ignition Coil H Primary/Secondary Circuit Malfunction
  • P0359: Ignition Coil I Primary/Secondary Circuit Malfunction
  • P0360: Ignition Coil J Primary/Secondary Circuit Malfunction
  • P0361: Ignition Coil K Primary/Secondary Circuit Malfunction
  • P0362: Ignition Coil L Primary/Secondary Circuit Malfunction
  • P0363: Misfire Detected – Fueling Disabled
  • P0364: Ignition Coil L Primary/Secondary Circuit
  • P0365: Camshaft Position Sensor B Circuit (Bank 2)
  • P0366: Camshaft Position Sensor B Circuit Range/Performance (Bank 2)
  • P0367: Camshaft Position Sensor B Circuit Low Input (Bank 2)
  • P0368: Camshaft Position Sensor B Circuit High Input (Bank 2)
  • P0369: Camshaft Position Sensor B Circuit Intermittent (Bank 2)
  • P0370: Timing Reference High Resolution Signal A Malfunction
  • P0371: Timing Reference High Resolution Signal A Too Many Pulses
  • P0372: Timing Reference High Resolution Signal A Too Few Pulses
  • P0373: Timing Reference High Resolution Signal A Intermittent/Erratic Pulses
  • P0374: Timing Reference High Resolution Signal A No Pulses
  • P0375: Timing Reference High Resolution Signal B Malfunction
  • P0376: Timing Reference High Resolution Signal B Too Many Pulses
  • P0377: Timing Reference High Resolution Signal B Too Few Pulses
  • P0378: Timing Reference High Resolution Signal B Intermittent/Erratic Pulses
  • P0379: Timing Reference High Resolution Signal B No Pulses
  • P0380: Glow Plug/Heater Circuit A Malfunction More details…
  • P0381: Glow Plug/Heater Indicator Circuit Malfunction
  • P0382: Glow Plug/Heater Circuit B Malfunction
  • P0383: Glow Plug/Heater Indicator Circuit
  • P0384: Glow Plug/Heater Circuit B
  • P0385: Crankshaft Position Sensor B Circuit Malfunction
  • P0386: Crankshaft Position Sensor B Circuit Range/Performance
  • P0387: Crankshaft Position Sensor B Circuit Low Input
  • P0388: Crankshaft Position Sensor B Circuit High Input
  • P0389: Crankshaft Position Sensor B Circuit Intermittent
  • P0390: Camshaft Position Sensor B Circuit (Bank 2)
  • P0391: Camshaft Position Sensor B Circuit Range/Performance (Bank 2)
  • P0392: Camshaft Position Sensor B Circuit Low Input (Bank 2)
  • P0393: Camshaft Position Sensor B Circuit High Input (Bank 2)
  • P0394: Camshaft Position Sensor B Circuit Intermittent (Bank 2)
  • P0395: Camshaft Position Sensor B Circuit High Input (Bank 2)
  • P0396: Camshaft Position Sensor B Circuit Intermittent (Bank 2)

P0400-P0499: Auxiliary Emission Controls

  • P0400: Exhaust Gas Recirculation Flow Malfunction
  • P0401: Exhaust Gas Recirculation Flow Insufficient Detected
  • P0402: Exhaust Gas Recirculation Flow Excessive Detected
  • P0403: Exhaust Gas Recirculation Circuit Malfunction
  • P0404: Exhaust Gas Recirculation Circuit Range/Performance
  • P0405: Exhaust Gas Recirculation Sensor A Circuit Low
  • P0406: Exhaust Gas Recirculation Sensor A Circuit High
  • P0407: Exhaust Gas Recirculation Sensor B Circuit Low
  • P0408: Exhaust Gas Recirculation Sensor B Circuit High
  • P0409: Exhaust Gas Recirculation Sensor A Circuit
  • P0410: Secondary Air Injection System Malfunction
  • P0411: Secondary Air Injection System Incorrect Flow Detected
  • P0412: Secondary Air Injection System Switching Valve A Circuit Malfunction
  • P0413: Secondary Air Injection System Switching Valve A Circuit Open
  • P0414: Secondary Air Injection System Switching Valve A Circuit Shorted
  • P0415: Secondary Air Injection System Switching Valve B Circuit Malfunction
  • P0416: Secondary Air Injection System Switching Valve B Circuit Open
  • P0417: Secondary Air Injection System Switching Valve B Circuit Shorted
  • P0418: Secondary Air Injection System Relay A circuit Malfunction
  • P0419: Secondary Air Injection System Relay B Circuit Malfunction
  • P0420: Catalyst System Efficiency Below Threshold (Bank 1)
  • P0421: Warm Up Catalyst Efficiency Below Threshold (Bank 1)
  • P0422: Main Catalyst Efficiency Below Threshold (Bank 1)
  • P0423: Heated Catalyst Efficiency Below Threshold (Bank 1)
  • P0424: Heated Catalyst Temperature Below Threshold (Bank 1)
  • P0425: Catalyst Temperature Sensor (Bank 1 Sensor 1)
  • P0426: Catalyst Temperature Sensor Range/Performance (Bank 1 Sensor 1)
  • P0427: Catalyst Temperature Sensor Low Input (Bank 1 Sensor 1)
  • P0428: Catalyst Temperature Sensor High Input (Bank 1 Sensor 1)
  • P0429: Catalyst Heater Control Circuit (Bank 1)
  • P0430: Catalyst System Efficiency Below Threshold (Bank 2)
  • P0431: Warm Up Catalyst Efficiency Below Threshold (Bank 2)
  • P0432: Main Catalyst Efficiency Below Threshold (Bank 2)
  • P0433: Heated Catalyst Efficiency Below Threshold (Bank 2)
  • P0434: Heated Catalyst Temperature Below Threshold (Bank 2)
  • P0435: Catalyst Temperature Sensor (Bank 2 Sensor 1)
  • P0436: Catalyst Temperature Sensor Range/Performance (Bank 2 Sensor 1)
  • P0437: Catalyst Temperature Sensor Low Input (Bank 2 Sensor 1)
  • P0438: Catalyst Temperature Sensor High Input (Bank 2 Sensor 1)
  • P0439: Catalyst Heater Control Circuit (Bank 2)
  • P0440: Evaporative Emission Control System Malfunction
  • P0441: Evaporative Emission Control System Incorrect Purge flow
  • P0442: Evaporative Emission Control System leak Detected (small leak)
  • P0443: Evaporative Emission Control System Purge Control Valve circuit Malfunction
  • P0444: Evaporative Emission Control System Purge Control Valve Circuit Open
  • P0445: Evaporative Emission Control System Purge Control Valve Circuit Shorted
  • P0446: Evaporative Emission Control System Vent Control Circuit Malfunction
  • P0447: Evaporative Emission Control System Vent Control Circuit Open
  • P0448: Evaporative Emission Control System Vent Control Circuit Shorted
  • P0449: Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction
  • P0460: Evaporative Emission Control System Pressure Sensor Malfunction
  • P0461: Evaporative Emission Control System Pressure Sensor Range/Performance
  • P0462: Evaporative Emission Control System Pressure Sensor Low Input
  • P0463: Evaporative Emission Control System Pressure Sensor High Input
  • P0464: Evaporative Emission Control System Pressure Sensor Intermittent
  • P0465: Evaporative Emission Control System Tank Detected (gross leak)
  • P0466: Evaporative Emission System Leak Detected (very small leak)
  • P0467: Evaporative Emission System Leak Detected (fuel cap loose/off)
  • P0468: Evaporative Emission System Purge Control Valve Circuit Low
  • P0469: Evaporative Emission System Purge Control Valve Circuit High
  • P0460: Fuel Level Sensor Circuit Malfunction
  • P0461: Fuel Level Sensor Circuit Range/Performance
  • P0462: Fuel Level Sensor Circuit Low Input
  • P0463: Fuel Level Sensor Circuit High Input
  • P0464: Fuel Level Sensor Circuit Intermittent
  • P0465: Purge Flow Sensor Circuit Malfunction
  • P0466: Purge Flow Sensor Circuit Range/Performance
  • P0467: Purge Flow Sensor Circuit Low Input
  • P0468: Purge Flow Sensor Circuit High Input
  • P0469: Purge Flow Sensor Circuit Intermittent
  • P0470: Exhaust Pressure Sensor Malfunction
  • P0471: Exhaust Pressure Sensor Range/Performance
  • P0472: Exhaust Pressure Sensor Low
  • P0473: Exhaust Pressure Sensor High
  • P0474: Exhaust Pressure Sensor Intermittent
  • P0475: Exhaust Pressure Control Valve Malfunction
  • P0476: Exhaust Pressure Control Valve Range/Performance
  • P0477: Exhaust Pressure Control Valve Low
  • P0478: Exhaust Pressure Control Valve High
  • P0479: Exhaust Pressure Control Valve Intermittent
  • P0480: Cooling Fan 1 Control Circuit Malfunction
  • P0481: Cooling Fan 2 Control Circuit Malfunction
  • P0482: Cooling Fan 3 Control Circuit Malfunction
  • P0483: Cooling Fan Rationality Check Malfunction
  • P0484: Cooling Fan Circuit Over Current
  • P0485: Cooling Fan Power/Ground Circuit Malfunction
  • P0486: Exhaust Gas Recirculation Sensor B Circuit
  • P0487: Exhaust Gas Recirculation Throttle Position Control Circuit
  • P0488: Exhaust Gas Recirculation Throttle Position Control Range/Performance
  • P0489: Exhaust Gas Recirculation Control Circuit Low
  • P0490: Exhaust Gas Recirculation Control Circuit Low
  • P0491: Secondary Air Injection System (Bank 2)
  • P0492: Secondary Air Injection System (Bank 2)
  • P0493: Fan Overspeed (clutch locked)
  • P0494: Fan Speed Low
  • P0495: Fan Speed High
  • P0496: Evaporative Emission System High Purge Flow
  • P0497: Evaporative Emission System Low Purge Flow
  • P0498: Evaporative Emission System Vent Control Circuit Low
  • P0499: Evaporative Emission System Vent Control Circuit High

How to Use an OBD2 Codes List for Car Diagnostics

Having an OBD2 codes list is a great first step, but understanding how to use it effectively is crucial for accurate car diagnostics. Here’s a step-by-step guide:

  1. Acquire an OBD2 Scanner: You’ll need an OBD2 scanner to retrieve the trouble codes from your vehicle’s computer. These scanners range from basic, affordable models to professional-grade tools with advanced features. Most auto parts stores also offer free OBD2 code scanning services.

  2. Connect the Scanner: Locate the OBD2 port in your vehicle. It’s typically found under the dashboard on the driver’s side. Plug the OBD2 scanner into this port.

  3. Retrieve the Codes: Turn your vehicle’s ignition to the “ON” position (without starting the engine). Follow the scanner’s instructions to read and display the stored trouble codes.

  4. Consult the OBD2 Codes List: Once you have the codes, use a comprehensive OBD2 codes list (like the one provided above or a “obd2 codes list pdf free download”) to look up the meaning of each code. Note down the descriptions for each code.

  5. Further Research and Diagnosis: The code description provides a general idea of the problem area. However, further diagnosis is usually necessary. Research the specific code online, consult repair manuals, or seek professional advice to pinpoint the exact cause and potential solutions.

  6. Repair and Verify: After identifying and repairing the issue, use the OBD2 scanner to clear the codes. Then, monitor your vehicle to ensure the check engine light does not reappear and the problem is resolved.

Finding the OBD2 Port: The OBD2 port is usually located under the dashboard on the driver’s side of most vehicles, making it easily accessible for diagnostic tools.

Important Considerations:

  • Generic vs. Specific Codes: Remember that generic codes provide a starting point. Manufacturer-specific codes (if present) may offer more precise information.
  • Multiple Codes: If you have multiple codes, address them systematically. Sometimes, one issue can trigger a cascade of codes. Prioritize codes that are directly related to critical systems.
  • Code Clearing: Clearing codes without fixing the underlying problem will only temporarily turn off the check engine light. The light will likely return if the issue persists.
  • Professional Help: For complex issues or if you are unsure about diagnosis and repair, always consult a qualified mechanic.

Get Your OBD2 Codes List PDF Free Download

For convenient access to this extensive OBD2 codes list anytime, anywhere, consider downloading a PDF version. An “obd2 codes list pdf free download” allows you to have this valuable resource on your phone, tablet, or computer, even without an internet connection.

Download your Free OBD2 Codes List PDF Here (This is a placeholder link. Replace with a link to a real PDF download.)

Having a downloadable OBD2 codes list PDF is incredibly useful for:

  • Offline Access: Use the list in your garage, workshop, or on the go, even without internet connectivity.
  • Quick Reference: Easily search and navigate the PDF document to find the code you need.
  • Printing: Print out the list for a physical copy in your toolbox or glove compartment.

By combining this comprehensive online guide with an “obd2 codes list pdf free download”, you’ll be well-equipped to understand and address your vehicle’s diagnostic trouble codes, ensuring proper maintenance and timely repairs.

Conclusion: Empowering Car Owners and Professionals with OBD2 Code Knowledge

Understanding OBD2 codes is no longer just for mechanics. With readily available information and tools, car owners can also play a more active role in vehicle maintenance and diagnostics. This detailed OBD2 codes list, along with the option to “obd2 codes list pdf free download”, aims to empower both car enthusiasts and professionals with the knowledge needed to decipher the language of their vehicles.

By using this guide and a reliable OBD2 scanner, you can take the first steps towards diagnosing and resolving car problems efficiently, saving time and potentially costly repairs. Remember to always prioritize safety and consult with a qualified professional when dealing with complex automotive issues.

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