My car is showing code p0300 and p0141 whst is the fix for this

Asked by daddypruitt Dec 16, 2014 at 12:48 PM about the 2002 Cadillac DeVille Sedan FWD

Question type: Maintenance & Repair

2 Answers
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TransAm77 answered 9 years ago

The p0300 is a random misfire code. Tune it up, new ac/delco plugs, good plug wires, fuel filter and don't forget to look at the cabin and air filters as well. The p0141 is a rear O2 sensor. Do the tune up first, clear the codes and see if the p0141 code comes back. It could be on now because of the engine misfiring.

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Moparjohn answered 9 years ago

the p0141 is a 02 sensor heater circuit malfunction code ..either there is an issue with the 02 sensor or the circuits that feeds it ....usually its a faulty 02 sensor considering the age of the vehicle .....it may not come back right away after it is erased.... but most likely will

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