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Anyone ever have a CEL go off?

raleighcab
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raleighcab Member

raleighcab

Posted
Posted

My CEL came on about 3 days ago and this morning I started the car up and it was off! :unsure:

I don't think I have ever had a car where the CEL went off without being reset. Not that I'm complaining...just wanted to know if anyone else has ever experienced this.

joee Member

joee

Posted
Posted

Yes... If the condition clears for a period of time or if the battery is disconnected for a few minutes the codes are cleared. I think they are stored in the DME computer and can be read back with a Porsche tester. If the condition has been cleared the light stays off. Watch out for radio code if disconnecting battery( be sure you have it before). I think airbag warning light can not be cleared by disconnecting battery.

1999Porsche911 Member

1999Porsche911

Posted
Posted
My CEL came on about 3 days ago and this morning I started the car up and it was off! :unsure:

I don't think I have ever had a car where the CEL went off without being reset. Not that I'm complaining...just wanted to know if anyone else has ever experienced this.

There are many sensors that can "blip" into and range that will cause a CEL. If after a few engine cycles, the error does not reoccur, the CEL will go off. A common one is the gas cap not being tight or filling the car with the engine running.

wwest Member

wwest

Posted
Posted

If the fuel system/tank loses the slight vacuum without a refueling the CEL will illuminate until a few drive cycles. Did you open the gas cap but not refuel?

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