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Can a Throttle Pedal Sensor be cleaned in a 95 Volvo 850? Or can it be adjusted? Or does it need to be replaced.
OBDII error code read PO120 and PO122.
Read these links. Will explain the codes.
I think you are dealing this a bigger problem than the sensor itself. In any case cleaning or adjusting probably wont do you any good. I have a feeling its in the wiring or PCM.