Question about 2000 Volvo S80

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I have had oxy sensors replaced but the engine light keeps coming on. I take it in they turn off the light two weeks later its back on.

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Any condition codes when plugged into the computer?

Posted on May 15, 2010

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I have had oxy sensors replaced but the engine light keeps coming on. I take it in, they turn off the light two weeks later its back on.


If the fault code relates to the oxygen sensors, make sure that they used Volvo factory sensors. The aftermarket sensors (even Bosch) have not worked well in the S80s. Also, make sure the catalytic converter is not causing the problem (the rear oxygen sensor monitors the cat).

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check you ignition components to see if they are worn or faulty, this is usually the cheapest part that can cause this problem since your tach runs off the ignition.check fuel filter before fuel pump as this could be clogged and also not as expensive as a pump or oxy sensor. a faulty oxy sensor will set a code.

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