Close
Q:

Check Engine light just suddenly went off suddenly while driving, whats it mean? on 2001 Pontiac Grand Prix

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
It was on for a month or so and i was told it was probably a piston misfire and i needed to change the catalytic converter, so will it comeback on or just stay off till somthing else is wrong?
(1) Answer
your car takes test on the whole vehicle at differnt times the light probably went off because what was making the light come on (failed test) must have passed the last test... it will most commonly come back on soon