Showing articles & questions for topic
P0429

Related articles

P0429 OBD-II Trouble Code: Catalyst Heater Control Circuit
P0429 means that both of the heated oxygen sensors have malfunctioned in some way.

Related questions

Question
Code P02A9 Cylinder 4 Balance-Fuel Trim at Limit
The code definition specifically indicates the number four fuel injector is leaking. Fuel trims are used to indicate how much the PCM (powertrain control module) needs to adjust the fuel duty cycle to maintain the proper air fuel ratio. Duty...

Need a mechanic?

Our certified mobile mechanics make house calls in over 700 U.S. cities. Fast, free online quotes for your car repair.

Get a quote

Post a question and get free advice from our certified mechanics.


Ask a question