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Dodge Caravan Code P0134

Q. I have a 1996 Dodge Caravan with a 3.3 liter V-6 engine with approximately 124,000 miles. The Service Engine Soon (SES) light came on and when I pulled the code, it was P0134. This basically means that the O2 sensor needs to be replaced. It states that it is Bank 1, Sensor 1. I had a repair facility pull this code and I would like to replace it myself.

Dodge Caravan Code P0134

My question is, which O2 sensor is this and where is it located in the engine? How many O2 sensors are there and should all be replaced? I thought the repair facility informed me there are four sensors. Is this true? How do I know which one this code is referring to? I do not know if this is the way to ask questions. If it is not, please inform me on how to submit a question.

Thank you,
Brian

A. P0134 is "Upstream HO2S (Heated Oxygen Sensor) stays at center". Which means that neither a rich or lean condition is being detected by the upstream HO2S. In essence the HO2S crapped out.

Here is a picture of where the upstream and downstream HO2S are located.

Dodge Caravan Code P0134
Downstream HO2S


Dodge Caravan Code P0134
Upstream HO2S

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