Check engine code for o2 sensor not on car
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Check engine code for o2 sensor not on car
My check engine light is on in my 04 civic EX coupe and the code is a P0134. The mechanic said it was the upper o2 sensor off the header but someone put an aftermarket head on my car without an oxygen sensor. I bought the car with 50k miles on it and driven over 80k more without the light on. Why would the light just come on now for an oxygen sensor that has not been there for a long time? Anyone have any ideas how to get the light to go back off?
Thanks for any help
Thanks for any help
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Honda Civic Forum
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