2013 Dodge Dart Check Engine Light: Diagnostic Checklist
The 2013 Dodge Dart is built on Chrysler’s Compact US Wide platform and uses a mix of Tigershark and MultiAir powertrains. When the check engine light turns on, the steps below help you identify the fault quickly, perform the repair, and prevent repeat MIL warnings.
- Powertrains: 2.0L Tigershark, 1.4L MultiAir Turbo.
- Before you start: Record all PCM codes, freeze-frame data (load, trims, temps), and check vacuum lines plus battery voltage.
- Tools: OBD-II scanner, spark tester, smoke tester, fuel pressure gauge, throttle body cleaner.
Frequent Codes on 2013 Dart
| Code | Symptoms | Likely Cause | First Steps |
|---|---|---|---|
| P0300/P030x | Misfire, flashing MIL | Ignition coil, spark plug, MultiAir actuator sticking | Swap coils/plugs, run compression, inspect MultiAir filter and oil change history. |
| P0299 | Turbo underboost, limp mode | Boost leak, wastegate failure, diverter valve issue | Pressure-test charge pipes, inspect vacuum lines, check wastegate actuator movement. |
| P0420/P0430 | Poor fuel economy, sluggish acceleration | Low catalyst efficiency, misfire or rich mixture | Address misfires first, check for exhaust leaks, monitor O2 sensor activity. |
| P0440/P0456 | Fuel odor, MIL after refueling | Loose cap, EVAP vent/purge leak | Replace cap, smoke-test EVAP, inspect ESIM module and hoses. |
| P0128 | Long warm-up time | Thermostat stuck open, low coolant | Check coolant level, replace thermostat, bleed system. |
Step-by-Step Diagnostic Flow
- Scan & document: Collect engine/transmission codes, fuel trims, and Mode $06$ misfire counters.
- Visual inspection: Check coil connectors, PCV hoses, vacuum lines, and look for oil leaks on wiring.
- Ignition/fuel: Swap coils and plugs, verify fuel pressure, inspect injectors for clogging.
- Boost/airflow: On MultiAir Turbo, inspect charge pipes, intercooler hoses, and MAP sensors.
- EVAP system: Smoke-test purge/vent valves, inspect ESIM for cracks or stuck plunger.
- Road test: Clear codes, drive with varied load, confirm trims within +/-10%, and ensure monitors complete.
When to See a Mechanic
- Flashing MIL with loss of power, raw fuel smell, or metallic knock.
- P0299, P2096, or P2098 returning immediately after ignition or boost repairs.
- Persistent MultiAir actuator faults or misfires after fresh oil service and coil swaps.
Resetting the Light
- Use a scanner: Clear the MIL after the fix; confirm readiness states before inspection.
- Battery disconnect: Only if essential; resets adaptive fuel trims and radio presets.
- Flashing MIL: An active misfire is damaging the converter-stop driving and fix immediately.
Preventive Maintenance
- Replace spark plugs and inspect coils every 30,000 miles; keep ignition components clean.
- Maintain oil changes to protect the MultiAir system; clogged filters cause actuator issues.
- Clean the throttle body and MAP/IAT sensors regularly.
- Inspect EVAP hoses, the ESIM module, and the fuel cap yearly for cracks or leaks.
Frequently Asked Questions
Why does P0299 keep coming back?
Boost leaks or a weak wastegate spring can retrigger the code. Pressure-test the system, inspect the diverter valve, and check turbo actuator calibration.
How do I troubleshoot MultiAir misfires?
Ensure the oil level is correct and the MultiAir filter is clean. Persistent issues may require reprogramming or replacing the MultiAir actuator.
Is it safe to drive with a check engine light on?
A steady MIL with normal drivability is usually safe short term, but schedule diagnostics soon. Flashing lights mean stop immediately to prevent catalytic converter damage.