2002 Dodge Neon check engine light

Using Odometer Display
1. DTCs can be retrieved by cycling ignition switch. To retrieve DTCs, cycle ignition key on-off-on-off-on within 5 seconds. Instrument cluster odometer will display DTC.
2. If no DTCs are displayed, odometer will display either P1684 and DONE, or only DONE. DTC P1684 is only a status and indicates that PCM memory has been cleared within the last 50 ignition cycles. No problem exists. DONE indicates that no DTCs are present and procedure is complete.

***Post the codes once you retrieve them. We'll be glad to help you diagnose. The MIL will not come on only for the oil change due.***

thanks for the help getting the codes. the code that popped was p0546. i found a line to the evap canister cracked at the top of the nipple to the canister. cut it and reinstalled. not sure if that was the problem because i do not know how to cear out the check engine light and see if it comes back.

Well, it could be. But P0546 is Exhaust Gas Temperature Sensor Circuit High (Bank 1). It has something to do with your EGR sensor circuit. You may want to unplug the sensor from its wire harness, inspect for cut, frayed or weakened wire or vacuum hose.

Just unplug your battery for 15 minutes to reset the PCM.

could you please tell me where the egr valve is located. could not find it in the haines manuel

My mistake... P0546 means different things to different manufacturers. In your case, Chrysler's P0546 - EVAP Emission Control - Very small leak detected. So, that would corresponds with cracked canister line.

Just unplug the battery for more than 15 minutes, and you should be fine.

Have a good day.