2013 Dodge Avenger Check Engine Light Guide
The 2011–2014 Dodge Avenger (2.4L World Engine and 3.6L Pentastar) shares many of its powertrain components with the Chrysler 200, meaning check engine light complaints also share common root causes. This guide maps the most frequent codes to quick tests so you can fix the problem without guesswork.
- Key systems: EVAP network, electronic throttle, ignition coils, oil pressure monitoring, 62TE automatic transmission.
- Before you start: Scan for all PCM/TCM codes, note freeze frame data, and inspect battery voltage (weak batteries are a common culprit).
- Required tools: OBD-II scanner, multimeter, smoke tester, adjustable spark tester.
Common Avenger Codes & Fixes
| Code | Symptoms | Likely Cause | First Actions |
|---|---|---|---|
| P0300/P030x | Rough idle, flashing MIL under load | Ignition coil failure, spark plug wear, intake gasket leak | Swap coils between cylinders, check plug gap (0.043 in), smoke test intake. |
| P0520 | Oil pressure warning light | Faulty oil pressure sensor or wiring, low oil level | Verify oil level, test sensor resistance; TSB 18-034-13 covers updated sensor. |
| P0440/P0456 | Fuel odor, MIL on after refuel | Loose gas cap, EVAP purge or vent valve leak | Replace cap with OEM, run smoke test focusing on canister and filler neck. |
| P2110/P0123 | Reduced power, throttle failsafe | Dirty throttle body, faulty TPS signal | Clean throttle bore, check 5 V reference, perform ETC relearn. |
| P0740/P0732 | Harsh shifts, limp mode | 62TE solenoid pack, low ATF+4, wiring to TCM | Check fluid level/condition, inspect connector C1 at transmission, consider quick-learn reset. |
Diagnostic Checklist
- Gather data: Scan all modules, document freeze frame, note EVAP/monitors status.
- Visual inspection: Look for cracked vacuum hoses, loose wiring at the TIPM, signs of rodent damage.
- Ignition/fuel: Use Mode $06$ misfire counters, verify coil command with a test light, inspect plugs for coolant/oil fouling.
- Emissions: Smoke test EVAP for P0456, verify O2 sensor switching (0.1–0.9 V) for P0420, check for exhaust leaks near flex pipe.
- Transmission tie-in: If P0700 accompanies engine codes, scan the TCM and watch live data for gear ratio errors.
- After repair: Clear codes, reset adaptives, and perform a mixed road test to ensure monitors set to “complete.”
Resetting the Check Engine Light
- Scan tool: Mode $04$ clear after the fix is the safest method; confirm readiness monitors before inspection.
- Battery disconnect: Only in emergencies—radio presets and adaptive values reset.
- Flashing light: Active misfire or converter damage risk. Stop driving and address the misfire first.
Preventive Maintenance Tips
- Replace spark plugs every 30,000 miles (2.4L) / 60,000 miles (3.6L); inspect coils for cracking.
- Flush coolant and inspect heater core connections—coolant leaks on electrical connectors can trigger sensor codes.
- Change ATF+4 and filters every 30,000 miles on the 62TE to avoid torque converter clutch codes.
- Inspect EVAP hoses and fuel cap seals yearly, especially in dusty or cold climates.
Frequently Asked Questions
Why does the check engine light return after coil replacement?
Verify the coil connector for corrosion and confirm the PCM driver works. If misfire follows the cylinder regardless of the coil, check injector pulse and compression.
Can I keep driving with an EVAP leak code?
You can, but the MIL will remain on and fuel vapor emissions increase. Repair the leak to avoid inspection failures and fuel odor complaints.
Does a dirty throttle body really trigger limp mode?
Yes. Carbon buildup can cause the PCM to detect throttle correlation errors. Cleaning the throttle body and performing an ETC relearn usually resolves P2110/P0123.
Looking for More DIY Resources?
Check out the Dodge transmission troubleshooting guide and the brake problem checklist for additional maintenance tips.