First you fix the problem that caused the light to come on, then you reset the light with a scanner.
You can not reset it, you can erase it for a while by disconnecting the battery but it will come back on til you fix the problem. Check for codes and repair the issue. After you repair it, you can reset it or it will reset by itself after you drive it for a while.
How do you reset the check engine light
2005 Cadillac DeVille DTS Sedan FWD
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Maintenance & Repair
Turn off or reset service engine light?
1994 Cadillac DeVille
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Maintenance & Repair
How do I get my check engine light off
2005 Cadillac DeVille DHS Sedan FWD
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Maintenance & Repair
How to add coolant to engine radiator when not possible through surge tank?
2004 Cadillac DeVille Sedan FWD
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Maintenance & Repair
Is it possible that the coolant level is too low to allow heated coolant into the heater pump, while there is nothing wrong with the level sensor on the recovery tank?
2004 Cadillac DeVille Sedan FWD
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Maintenance & Repair
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