Question about 2006 Buick Lucerne

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P2a00 code I am receiving a code of P2A00 I replaced the 02 upstream sensor with a Bosch replacement where else should I look to resolve code issue? Thanks, Joe McDonald.

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You have a 02 sensor on the exhaust under the car that usually goes shortly after the other and viseser verser. Go to the auto parts and ask if your vehicle is OBD 2 compliant. if so buy an OBD 2 and plug it into your socket usually under the drivers side between you knees. then press read. it wil tell you what codes and the results and you also have the option to erase the codes and turn out your check engine soon light. Replacing a sensor will turn off the light but it can take weeks for the computer to reset itself that`s why the machanic uses the OBD 2 to check to see what sensors are tripped and reset them. Try the reset before buying another sensor. this should work.

Posted on Apr 07, 2014


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