Why the Check Engine Light Comes On in a Dodge Caravan
The Caravan’s MIL illuminates when the PCM detects a fault in ignition, emissions, fuel delivery or transmission. Common triggers include:
- Loose or damaged fuel cap (EVAP leaks).
- Worn ignition components causing misfires.
- Vacuum leaks that create lean conditions.
- Transmission faults (e.g., solenoid pack issues) sending requests via the PCM.
If the light is steady and performance is normal, schedule diagnostics soon. If it flashes, reduce throttle immediately and diagnose the misfire to protect the catalytic converters.
Always scan codes before clearing the light, and perform recommended drive cycles after repairs so monitors reset to “complete”.
Need detailed procedures? Read the Grand Caravan check engine guide.