Service Engine Soon

[2001bird]

My Service Engine Soon light has been on for a while. I don't know how to reset the mug.

[BlackLT1Z28]

Did you check the codes to see if it was something serious?

[2001NBMZ28]

Go by Auto Zone and they'll read it for free, since it's been on a while might have a couple things going on. I'd recommend getting it read and posting the code(s), but if you want to try and reset it you can - some codes throw a light immediately, some take a few ignition cycles:

PCM Reset
Turn key on, don't start car
Pull PCM BATT and PCM IGN fuses in engine compartment
Wait 5-10 min
Turn ignition off
Replace fuses
Idle will need a few minutes to relearn, and will reset all the readiness tests, so if you're trying to reset it to get through OBDII emissions testing you'll need to put some miles/cycles on it before getting tested - after fixing the problem.