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Cheek eng, light is on and it is giving a code po134 but the car is run good.

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When the ceck engine light is on you will almost never feeel any difference in the way the car feels or runs your code indicates the following

O2 Sensor Circuit No Activity Detected Bank 1 Sensor 1
You should replace the O2 sensor that is in the exhaust manifold or exhaust pipe just off the engine and before the catalytic converter.

Posted on Nov 12, 2009

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CODE PO134 -UPSTREAM O2 SENSOR NEITHER RICH OR LEAN.

Posted on Nov 12, 2009

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Code PO134


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HO2S-11 (Bank 1 Sensor 1) Insufficient Activity

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