My Mercedes C180 2002 has the engine light on.
I have got a code of 0138 and it says O2 sensor high voltage.
Does it need to be replace or could I clean it? Mileage is about 80,000 and which sensor should I change (is there only one) my code reader says bank 1
Thanks for any help
Saturday, June 30th, 2012 AT 3:00 PM