check engine is on the dash board after a client washed his engine, I take a diagnosis test and the machine indicated the problem to be with oxygen/air sensor, I have since replaced it and erased. but
check engine is on the dash board after a client washed his engine, I take a diagnosis test and the machine indicated the problem to be with oxygen/air sensor, I have since replaced it and erased. but the check engine light is still on, \what could be the problem?