check engine light on

no, just part of the real diag, once this test is performed and passed, then you would go to the electrical side to see if the soloniods are working and recieving the correct signals at the correct time. this is why you pay for a real diag and not just look at the code and guess. Roy

I would have a diagnostic but one of the 4 oxy sensors is likely the problem.its pretty common there are 4 on this car

Try seeing if its the speed sensor.