CHECK ENGINE LIGHT CAME ON IN MY . WHAT DO I DO TO FIND OUT WHY?

2003 Hummer H2

Tiny

semobeaglewing

December, 15, 2011 AT 4:38 AM

Just looked at the gauges and noticed the check engine light was on. It's ready for an oil change. I reset the % until I can change the oil. Would that be the problem?

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2 Answers

Tiny

Jacobandnickolas

December, 15, 2011 AT 4:40 AM

That won't be a problem. However, make sure you don't forget. Also, when you do change it, reset the computer again.

MAKE SURE THE OIL LEVEL IS FULL.

Tiny

factoryjack

December, 17, 2011 AT 6:49 AM

To address the check engine light, you need to have a diagnostic system check of the powertrain. This can be done at most auto part chains. Regular occurrences involve a faulty catalyst(P0420/430), vent system performance(P0446), or oxygen sensor heater circuit faults. As a primary visual you can do yourself, check that the fuel cap is fully installed.

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