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if it's random, probably bad gas. if it comes on after 2 drives cycles and stays light every time you reset the ecu, check the codes. if the codes for 2 heated oxygen sensors, check or replace your plugs.
what do u mean by random? does it flicker or disappears afetr a while? try to get the code, otherwise there's no telling. probably a loose connector or bad ground...
if it's random, probably bad gas. if it comes on after 2 drives cycles and stays light every time you reset the ecu, check the codes. if the codes for 2 heated oxygen sensors, check or replace your plugs.
I always pump 91 from Sams Club, I think they sell reliably "good" gas.
Originally Posted by madmax98
what do u mean by random? does it flicker or disappears afetr a while? try to get the code, otherwise there's no telling. probably a loose connector or bad ground...
CEL comes on randomly and resets when I restart the engine.
One thing though, it does tend to come on when I cruise at relatively same speed (no cruise control).
Timing belt, spark plugs just got replaced, though this started happened way before I have these maintenance done.
