How to Reset 2014 Dodge Durango Check Engine Light Codes
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Resetting the MIL on a 2014 Durango without fixing the root cause only hides the problem temporarily. Use this guide to diagnose common DTCs, complete repairs, and perform a proper reset that keeps the light off.
- Applies to: 2014 Durango SXT, Rallye, Limited, R/T, Citadel.
- Tools: Enhanced OBD-II scanner (Mode $06$ capable), smoke machine, fuel pressure gauge, DVOM.
- Immediate warning: A flashing MIL signals severe misfire—reduce load immediately to protect the catalysts.
Common 2014 Durango Codes
| Code | Subsystem | Likely Cause | First Checks |
|---|---|---|---|
| P0300/P030x | Ignition/Fuel | Coils, plugs, injector imbalance, compression loss | Review Mode $06$ misfire counters, inspect plugs/coils, run compression/leak-down. |
| P0420/P0430 | Catalyst | Efficiency loss from misfire, exhaust leak, rich mixture | Check misfire history, inspect exhaust manifolds, compare O2 sensor waveforms. |
| P2096/P2098 | Fuel Trim | Lean post-cat condition | Smoke-test intake/exhaust, inspect PCV system, monitor fuel trims during cruise. |
| P0456/P0457 | EVAP | Small leak, loose cap, cracked vapor hose | Verify cap seal, command purge closed, apply smoke via EVAP service port. |
| P06DD/P06DE | Oil Pump Control | Dual-stage pump stuck, incorrect filter, wiring fault | Confirm Mopar filter, measure mechanical oil pressure, inspect harness near oil cooler. |
Reset Workflow After Repairs
- Capture baseline data: Save stored/pending/permanent DTCs, freeze-frame, long/short fuel trims, and Mode $06$ results before clearing anything.
- Repair root causes: Resolve misfires, fuel-trim issues, EVAP leaks, and oil pump faults. Replace components as required.
- Clear codes with a scan tool: Use Mode $04$ after repairs. Avoid disconnecting the battery; it erases adaptive memory and delays readiness.
- Complete the drive cycle: Follow Chrysler’s cycle—idle, gentle acceleration to 45 mph, steady cruise, decel without braking, then highway driving.
- Verify success: Re-scan to confirm the MIL remains off, readiness monitors show COMPLETE, and no pending/permanent DTCs remain.
Driving Guidance While Diagnosing
- Avoid towing or heavy acceleration while misfire or catalyst codes are active.
- Short trips with EVAP-only codes are acceptable, but repair them before inspection deadlines.
- Monitor oil pressure and coolant temperature; abnormal readings demand immediate shutdown.
Preventive Maintenance Tips
- Change oil with MS-6395 0W-20 (3.6L) or 5W-20 (5.7L) and Mopar filter every 6,000 miles.
- Replace spark plugs at 100,000 miles (V6) or 30,000 miles (V8) and torque coils to spec.
- Inspect PCV valve, intake manifold gaskets, and purge hoses each service interval.
- Check exhaust manifold studs annually; leaks trigger catalyst and fuel-trim codes.
- Keep PCM/TCM software current to benefit from updated misfire detection and stop/start logic.
Frequently Asked Questions
Can I pull the PCM fuse to reset the light?
Pulling the fuse only clears the light temporarily. The PCM reruns diagnostics and the MIL will return if the fault persists.
No. Use the recommended octane. Misfires require repairs to ignition, fueling, or mechanical components.
How long should I drive before inspection?
After repairs, drive 50 miles with mixed conditions (city, cruise, idle) and confirm all readiness monitors are COMPLETE.
Related Durango Resources
- 2015 Durango MIL workflow for later model-year reference.
- Transmission diagnostics for 8HP70 issues.
- No-spark diagnostic guide for persistent misfires.