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dvcpro50



Member Since: 13 Jul 2016
Location: DC
Posts: 2

United States 
MY 09 SC 4.2L O2 Sensor Faults P0151-1a P0051 P0131-1a P0031

I have replaced my O2 Sensors twice now on my 09 SC. LM320 I clear the codes but they return shortly their after. I have swapped out to another set of Sensors after being told that they may be not the correct type being after market. So the second set I bought from Atlantic British here in the USA and installed them. They are an Off brand called Walker.

My CEL is on constantly and even after I reset it it will return shortly their after.

I contacted AB and they told me that the sensors can't all be bad ?

I am going to try probing the harness and see if there is possibly faulty wiring between the O2 sensors and the ECU.

Any suggestions would be greatly appreciated.

Post #591421 Tue Dec 03 2019 4:24pm
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