2014 Dodge Journey Check Engine Light Guide
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This guide expands the 2014 Journey MIL workflow with a structured diagnostic plan covering misfires, fuel trims, EVAP leaks, and oil pump control faults. Use it to interpret codes quickly and confirm repairs before inspection.
- Applies to: 2014 Journey SE, SXT, R/T, Crossroad, Crew.
- Tools: Enhanced scan tool, Mode $06$, smoke machine, DVOM, fuel pressure gauge.
- Safety reminder: A flashing MIL indicates a severe misfire—reduce load immediately and inspect ignition/fuel systems.
Key 2014 Journey Codes
| Code | Subsystem | Typical Cause | Initial Checks |
|---|---|---|---|
| P0300/P030x | Ignition/Fuel | Coils, plugs, injectors, compression loss | Review misfire data, inspect plugs/coils, run compression test. |
| P0420/P0430 | Catalyst | Burned catalyst after misfires or exhaust leaks | Check misfire history, monitor O2 sensors, inspect manifolds. |
| P2096/P2098 | Fuel Trim | Lean post-catalyst condition | Smoke-test intake/exhaust, inspect PCV system, monitor STFT/LTFT. |
| P0456/P0457 | EVAP | Loose cap, cracked hoses, ESIM leak | Inspect cap seal, command purge closed, apply smoke to EVAP service port. |
| P06DD/P06DE | Oil Pump Control | Dual-stage pump stuck or wiring fault | Verify Mopar filter, check oil pressure with mechanical gauge, inspect wiring. |
Diagnostic Workflow
- Gather data: Record active, pending, and permanent DTCs plus freeze-frame and Mode $06$ data.
- Fix misfires first: Replace spark plugs as needed, swap coils, verify injector balance, and confirm compression.
- Analyze fuel trims and catalysts: Repair intake/exhaust leaks and observe O2 sensors during a controlled road test.
- Check the oil pump system: Ensure the correct filter, test oil pressure, and inspect the harness for chafing.
- Inspect EVAP sealing: Command purge closed, smoke-test, and repair hoses, ESIM valves, or filler neck leaks.
- Validate repairs: Clear codes, complete the drive cycle, and confirm readiness monitors show COMPLETE.
Driving Guidance During Repairs
- Avoid long highway trips or heavy loads with active misfire or catalyst codes.
- EVAP-only codes allow limited driving, but plan repairs before emissions testing.
- Monitor coolant and oil pressure; abnormal readings require immediate shutdown.
Preventive Maintenance
- Use MS-6395 5W-20 oil and Mopar MO-349 filter every 6,000 miles.
- Inspect spark plugs every 30,000 miles and replace per schedule (60k 2.4L / 100k 3.6L).
- Check intake manifold bolts, PCV assembly, and purge hoses for leaks.
- Inspect exhaust manifold studs and gaskets annually.
- Keep PCM/TCM firmware up to date to benefit from improved misfire detection.
Frequently Asked Questions
Why does the MIL turn on after short trips?
Short-trip driving prevents full warm-up, which can skew fuel trims and trigger EVAP or catalyst monitors. Complete a full drive cycle periodically.
Can I ignore P0456?
Ignoring EVAP leaks keeps the MIL on and blocks inspection readiness. Repair the leak even if drivability seems normal.
How long does it take to confirm the fix?
Plan for 50 miles of mixed driving. Re-scan afterward to confirm the MIL remains off and monitors are COMPLETE.