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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Posted on Jan 02, 2017

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I have a 2006 Buick Lucerne 4.6L V8 with 80.0K I am receiving a fault of P2A00 I have replaced the upstream 02 sensor with a Bosch where else should I look?


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I have a 2006 Nissan Maxima and it is causing me problems. Check Engine light came on about three months ago but drove fine. No loss of mileage or anything. Did not pass smog do to a P2A00 code (O2 sensor...


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Sometimes can be prematurely dirty air filter, sets off the air flow sensor, which sets off the o2 sensor. So might try new air filter first and erase codes and then see, before you spend more bucks than you need; then if codes return, do the flow mix sensor.

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FIRST I HAVE A CODE OF P2A00 AND TIRE INFLATE


Rickbarfuss,

The PA200 code is for a front A/F sensor, not an O2 sensor. This is a fairly accurate code and I am 99.99% sure that if you simply clear the code, it will come back. Is the car out of warranty?

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