I have a 2001 e320. The code reads that oxygen sensors are bad but my mechanic says they are fine so it must be a computer going bad. I'm not to good with cars so any help would be great! Everything runs very smooth only issue is the check engine and code saying o2 sensors. Mine are about a year old

I would be interested in the code numbers. There are no codes that I know of that say the O2 sensors are bad except for the O2 heater circuits. There are some codes on some cars that say O2 voltage too low or high but that is not saying the senor is bad, only that the readings are out of range.

Paul

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84 500 SEL (307,xxx miles)

I think they are reading to high.What you said sounds about right. If that is the case how would that problem be fixed (Reading out of range high or low)

He mentioned something about the heater circuit, not sure ill have to ask him monday.

I think they are reading to high.What you said sounds about right. If that is the case how would that problem be fixed (Reading out of range high or low)