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

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

Question type: Maintenance & Repair

2 Answers

22,790

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.

Best Answer Mark helpful
5,435

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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