2017 Dodge Durango Check Engine Light Guide
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The 2017 Durango gained revised PCM calibrations, expanded stop/start availability, and strict catalyst monitoring. When the MIL turns on, the PCM stores data that directs your repairs. This guide covers the most common codes, diagnostic steps, and maintenance practices.
- Applies to: 2017 Durango SXT, GT, Citadel, R/T, and special trims.
- Tools: Enhanced scan tool with Mode $06$, smoke machine, fuel pressure transducer, DVOM, mechanical oil-pressure gauge.
- Safety warning: A flashing MIL indicates severe misfire. Reduce load immediately and inspect ignition/fuel systems.
Priority 2017 Durango Codes
| Code | Subsystem | Likely Cause | First Checks |
|---|---|---|---|
| P0300/P030x | Ignition/Fuel | Coils, plugs, injector imbalance, compression loss | Review misfire counters, inspect plugs/coils, swap components, verify compression. |
| P0430 | Catalyst | Bank 2 efficiency below threshold | Check misfire history, inspect exhaust leaks, compare O2 sensor waveforms. |
| P2098 | Fuel Trim | Post-cat lean condition | Smoke-test intake/exhaust, inspect PCV system, monitor fuel trims during steady cruise. |
| P06DD/P06DE | Oil Pump Control | Dual-stage pump stuck or wiring issue | Confirm Mopar filter, measure mechanical oil pressure, inspect harness near the filter housing. |
| P1DF3/P1DC4 | Stop/Start | Auxiliary battery weakness, calibration mismatch | Load-test both batteries, inspect ground straps, update PCM/TCM, perform stop/start relearn. |
Diagnostic Workflow
- Capture baseline: Record DTCs, freeze-frame info, Mode $06$ misfire results, fuel trims, and permanent codes before clearing anything.
- Resolve misfires: Replace plugs, swap coils, run injector balance tests, and verify compression to protect catalysts.
- Analyze catalysts and fuel trims: Repair intake/exhaust leaks, then road-test while graphing O2 sensors and trims.
- Inspect oil pump system: Attach a mechanical gauge for oil pressure readings and inspect wiring for chafing or corrosion.
- Troubleshoot stop/start faults: Test both batteries, inspect grounds, update software, and perform relearn procedures after repairs.
- Complete validation drive: Clear codes, drive 50 miles covering city, cruise, and idle segments, and re-scan to ensure no pending/permanent DTCs remain.
Driving Guidance While Diagnosing
- Avoid towing or heavy throttle when the MIL flashes or the engine runs rough.
- Short trips with EVAP-only codes are acceptable; repair them before inspection deadlines.
- Monitor oil pressure, coolant, and transmission temperature to prevent secondary failures.
Preventive Maintenance Checklist
- Change MS-6395 0W-20/5W-20 oil and Mopar filters every 6,000 miles.
- Replace spark plugs per schedule (100k V6 / 30k V8) and torque coils correctly.
- Inspect intake manifold gaskets, PCV valve, and purge hoses each service interval.
- Check exhaust manifold studs annually; leaks often trigger catalyst and trim codes.
- Test both batteries twice a year on stop/start-equipped models.
Frequently Asked Questions
Do I need to replace the catalyst when P0430 appears?
Not automatically. Repair misfires, reset fuel trims, and perform a highway drive before replacing the converter.
Why does stop/start disable itself with P1DF3?
The PCM detects insufficient battery performance or calibration mismatch. Test both batteries, repair wiring, and update software.
How long does it take for the MIL to stay off after repairs?
Plan for 50 miles of mixed driving. Verify readiness monitors are COMPLETE and no pending codes remain before inspection.