The 2015 Dodge Journey, like all modern vehicles, is equipped with an On-Board Diagnostic (OBD) system, specifically OBD2, which monitors various systems within your car, most importantly its emissions control systems. When something goes wrong, the OBD system generates Diagnostic Trouble Codes (DTCs), commonly known as OBD codes, to help identify the problem. Understanding these codes is the first step in diagnosing and repairing issues, ensuring your Journey runs smoothly and efficiently, and passes emission tests.
This guide provides a comprehensive overview of OBD and OBD2 codes relevant to your 2015 Dodge Journey. We’ll delve into what these codes mean, common issues that might trigger them, and how to approach troubleshooting. This information is based on official documentation and expert automotive repair knowledge to ensure accuracy and help you navigate the complexities of your vehicle’s diagnostic system.
Understanding OBD2 Systems and Readiness Monitors
The OBD2 system is designed to monitor the performance of your vehicle’s engine and emission control systems. It uses a series of self-tests, known as “readiness monitors,” to verify that these systems are functioning correctly. These monitors run in the background as you drive, and when they detect a problem, they store a DTC and may illuminate the Malfunction Indicator Lamp (MIL), often referred to as the “Check Engine” light on your dashboard.
For a 2015 Dodge Journey to pass a smog check, these readiness monitors need to be in a “ready” state, indicating that the tests have been completed and no issues were found. The number of incomplete monitors allowed can vary depending on the vehicle’s model year and fuel type, but generally, for a 2015 gasoline vehicle, most monitors need to be complete.
Here’s a summary of the readiness monitor standards relevant to your 2015 Dodge Journey, based on general OBD test standards:
| Model Year | Fuel Type | Number of Incomplete Monitors Allowed to Pass OBD Test |
|---|---|---|
| 2000 and newer | Gas | Evaporative system |
This means that for your 2015 Dodge Journey (gasoline), all monitors should ideally be complete, but in some regions, one incomplete monitor, specifically the Evaporative System monitor, might be permissible. However, it’s always best to aim for all monitors to be ready to ensure you pass any emissions testing.
Malfunction Indicator Lamp (MIL) Standards
The MIL, or “Check Engine” light, is a crucial indicator of your vehicle’s health. Here are the standard behaviors of the MIL during an OBD test:
| Condition | Pass/Fail | Standard |
|---|---|---|
| Key On Engine Off (KOEO) | Pass | MIL illuminates |
| Engine Running (KOER) | Pass | MIL turns off |
| Key On Engine Off (KOEO) | Fail | MIL does not illuminate |
| Engine Running (KOER) | Fail | MIL illuminates |
Essentially, the MIL should light up briefly when you turn the key to the “ON” position before starting the engine (KOEO) to show that the bulb is working. Once the engine is running (KOER), the MIL should turn off if no active faults are detected. If the MIL stays on while the engine is running, it indicates a problem that needs attention and will likely result in a smog check failure.
Communication Standards
For any OBD test to be performed, the diagnostic tool must be able to communicate with your vehicle’s computer system. Communication issues can arise from various factors:
- Damaged OBD Connector or Wiring: The OBD2 port itself or the wiring leading to it could be damaged.
- Aftermarket Stereo Systems: Improperly installed aftermarket electronics can sometimes interfere with OBD communication.
- Computer Issues: In rare cases, issues within the vehicle’s computer system can prevent communication.
If your 2015 Dodge Journey fails to communicate during an OBD test, it will result in a failed test. It’s crucial to ensure your OBD port is in good condition and that there are no aftermarket accessories interfering with the system.
Permanent Diagnostic Trouble Code (PDTC) Standards
Permanent Diagnostic Trouble Codes (PDTCs) are a specific type of DTC that, once set, cannot be cleared by simply using a scan tool or disconnecting the battery. They are designed to ensure that a vehicle has been properly repaired and the underlying issue has been resolved before the code is cleared. PDTCs will only clear themselves after the OBD2 system verifies, through repeated testing over multiple drive cycles, that the problem is no longer present.
For 2010 and newer vehicles, including your 2015 Dodge Journey, the presence of a PDTC will result in a smog check failure.
| Model Year | OBD Test | Standard |
|---|---|---|
| 2010 and newer | OIS | Vehicles fail when a PDTC is present |
However, there are exceptions. A PDTC might be ignored if the vehicle has completed at least 15 warm-up cycles and been driven at least 200 miles since its OBD information was last cleared. This is to allow time for the system to self-clear the PDTC if the issue has indeed been resolved.
It’s important to note that vehicle manufacturers, including Dodge, have issued extended warranties, recalls, and repair campaigns for some vehicles that have trouble properly clearing PDTCs. If your 2015 Dodge Journey fails a smog check due to a PDTC, it’s worth checking with a Dodge dealer to see if there are any applicable recalls or service campaigns.
2015 Dodge Journey Specific OBD & OBD2 Code Information
While the original document provided focuses on broader OBD issues across many makes and models, it does contain specific entries relevant to Dodge vehicles, including the Journey, which can help us understand potential OBD-related concerns for your 2015 model.
Looking at the “Permanent Diagnostic Trouble Code Vehicles of Interest” section, we find a crucial entry for the Dodge Journey:
| Make | Year | Model | Engine (L) | Fuel Type | Issue | Cause and Possible Remedy | Instructions to Inspector |
|---|---|---|---|---|---|---|---|
| Dodge | 2011-2015 | Journey | 2.4, 3.6 | Permanent Fault Codes will not clear | Reflash per Recall V51 | Reflash then retest |
Image alt text: Location of the OBD2 port in the dashboard area of a Dodge Journey.
This entry is incredibly relevant to our keyword “2015 Dodge Journey Obd Obd2 Codes.” It indicates that 2011-2015 Dodge Journey models are known to have an issue where Permanent Fault Codes will not clear. The documented remedy is a reflash under Recall V51.
What does this mean for your 2015 Dodge Journey?
- Potential PDTC Issue: Your 2015 Dodge Journey might be susceptible to issues with permanent diagnostic trouble codes not clearing. This could lead to a smog check failure even if the underlying problem has been physically repaired.
- Recall V51 is Crucial: If you experience persistent OBD codes or have trouble passing a smog check due to PDTCs, checking if Recall V51 has been performed on your vehicle is essential.
- Dealer Reflash: The recommended solution is a software reflash performed by a Dodge dealership. This reflash likely updates the Powertrain Control Module (PCM) software to correctly handle PDTC clearing.
How to proceed if you suspect a PDTC issue or have OBD codes on your 2015 Dodge Journey:
- Check for Active DTCs: Use an OBD2 scanner to read any current diagnostic trouble codes stored in your vehicle’s computer. Note down these codes.
- Check for PDTCs: A more advanced OBD2 scanner can specifically check for Permanent Diagnostic Trouble Codes. See if any PDTCs are present.
- Research Recall V51: Contact your local Dodge dealership or use the NHTSA (National Highway Traffic Safety Administration) website (www.nhtsa.gov/recalls) to check if Recall V51 is applicable to your 2015 Dodge Journey and if it has been performed. You will need your Vehicle Identification Number (VIN) for this check.
- Dealer Visit: If Recall V51 is applicable and hasn’t been performed, schedule a service appointment at a Dodge dealership to have the reflash done. This is typically a no-cost repair under recall.
- Address Underlying DTCs: If you have regular DTCs (not PDTCs), research what these codes mean specifically for your 2015 Dodge Journey. Use reputable online resources or consult a repair manual. Diagnose and repair the underlying issue causing these codes.
- Clear Codes (After Repair): After addressing any underlying issues and getting the Recall V51 reflash (if needed), clear the DTCs using an OBD2 scanner.
- Drive Cycle: Perform a proper drive cycle as recommended by Dodge for your 2015 Journey. This allows the readiness monitors to run and complete their self-tests. This might involve specific driving conditions (speeds, acceleration, deceleration, etc.). Consult your owner’s manual or a repair information source for the correct drive cycle.
- Re-scan for Codes and Readiness: After the drive cycle, re-scan your vehicle for any remaining DTCs and check the status of the readiness monitors. All relevant monitors should be “ready,” and no DTCs or PDTCs should be present.
General OBD2 Code Troubleshooting Tips for Your 2015 Dodge Journey
Beyond the specific PDTC issue related to Recall V51, your 2015 Dodge Journey can experience a wide range of OBD2 codes related to various systems. Here are general troubleshooting steps:
- Record the Code: Always write down the exact DTC code (e.g., P0171, P0420). This code is your starting point for diagnosis.
- Research the Code: Use online resources, repair manuals, or databases to understand what the code means specifically for your 2015 Dodge Journey. Code definitions can be generic, but the specific cause and repair can vary by make, model, and engine. Websites like OBD-Codes.com are excellent resources.
- Visual Inspection: Before jumping to expensive repairs, perform a thorough visual inspection:
- Check under the hood for any obvious issues: loose gas cap, disconnected hoses, wiring problems, fluid leaks.
- Inspect the air intake system, vacuum lines, and exhaust system for leaks or damage.
- Gas Cap: A loose or faulty gas cap is a common cause of Evaporative Emission System codes (P0440 series). Ensure your gas cap is properly tightened and in good condition.
- Basic Maintenance: Ensure your 2015 Dodge Journey is up-to-date on basic maintenance:
- Air Filter: A clogged air filter can affect engine performance and trigger codes.
- Spark Plugs and Wires: Old or faulty spark plugs can cause misfire codes (P0300 series).
- Fluid Levels: Check engine oil, coolant, and other fluid levels. Low fluid levels can sometimes indirectly trigger codes.
- OBD2 Scanner Tools: Invest in a good quality OBD2 scanner. Basic scanners can read and clear codes. More advanced scanners can provide live data, readiness monitor status, and PDTC checks, which are invaluable for diagnosis.
- Professional Help: If you are uncomfortable with automotive repair or the code is complex, don’t hesitate to seek professional help from a certified mechanic or a Dodge dealership. Misdiagnosis can lead to unnecessary repairs and expenses.
Conclusion
Understanding OBD and OBD2 codes for your 2015 Dodge Journey is key to maintaining your vehicle’s health, ensuring it runs efficiently, and passing emissions tests. Being aware of the potential PDTC issue and Recall V51 for this model year is particularly important. By following a systematic approach to troubleshooting, utilizing OBD2 scanner tools, and seeking professional help when needed, you can effectively address OBD code issues and keep your 2015 Dodge Journey on the road for years to come. Remember to always prioritize accurate diagnosis and repair to resolve the root cause of any OBD codes, not just clear the codes themselves.
