there is no "diagnostic mode" check ALL the fuses xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx If you are referring to the diagnostic connecter being accessed and the light does not come on then you need to check and replace the bulb. If it was a fuse, which would be the ECM, the car would not even run.
2006 Pontiac grand prix recurring number 4 cylinder misfire diagnostic code? What could it be?
code p0201
check lugnutpatterns.com
check out lugnutpatterns.com
A bad fuel pump can cause your 1998 Pontiac Grand Am engine to randomly stop running. The fuel pump might be working at times and then at other times not working.
should be under the driver side dash
94 grand ams are fuel injected, not carburated. There is no carburetor to check
sealed system or not
check under the dash by the sterring wheel
There are pages and pages of things that can cause a check engine light. You need to have it checked with a scantool. Then the code can be diagnosed and repaired.
Check your fuse.
were is the starter relay fuse on a 1999 Pontiac Grand Prix