Close
QUESTIONS

RepairPal is your advocate for car care advice and guidance

Q: check engine light on 2001 BMW 330Ci

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
i just had my alternator, thermostat replaced and the parking break light, traction light, check engine light were on and the said they had to calibrate it?? its been 1 month and now my check engine light is on again these are the codes # 18 signal, camshaft sensor, exhaust second code # 204 plausibility, idle speed (air Leakage)
No car image 94a1663db56199c5353592009e34aaa51078a2469bed068bb8d6f0ba43accf97
Get a Repair Estimate
Guaranteed by certified locations nationwide. Learn more
RepairPal estimates are guaranteed at over 1,700 quality certified locations nationwide. Learn more
If the alternator stops charging on many cars many dash warning lights can come on (e/brake, check engine, park brake and traction control light) but once the car is charging and the engine is running no dash warning lights should be on. Any time we replace an alternator we check the diode pattern and charging amperage and voltage of the installed alternator (some rebuilt alternators are junk!). The codes stored need to be investigated ask for the codes to be written down like P0420, or P1138 they are more specific trouble codes with specific trouble shooting charts available.
Find Out Why Your Check Engine Light Is On
Didn't find what you were looking for?