how to turn off check engine light. truck has two batteries
Ford Q&AAsk Your Question
2004 Ford F-250 Super Duty Question: check engine light
Answer #1fernando January 06, 2011, 21:19Master
Check Engine Light means there is problem in the emission control system of your truck. They recommend to retrieve the trouble codes stored in the truck's computer to properly diagnose the problem. For more info about the CEL visit; http://repairpal.com/check-engine-light
Answer #2DaveJHM January 06, 2011, 21:56Master
I just answered your second question - but clearly, you have an issue with the engine performance on this truck that has clues in the processor that is setting the check engine light. Have the diagnosis performed.