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YOUR RESEARCHEngine Light On!
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Fill 03 996 carrera 2
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Suggestion
Unless you have an OBDII tool then you will not know what caused it but its worth checking the above.
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Suggestion · Original poster
Driving along the engine check light has come on with instuctions to drive to the garage.
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Suggestion
On an '03 you don't need to disconnect the battery to reset the ECU adaptation.
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Hi
Just filled my 03 996 carrera 2. Driving along the engine check light has come on with instuctions to drive to the garage. Engine sounds fine no smoke or noises, temp and oil pressure good. Limped home not above 40 but seems normal. Not one to push my look any ideas before it goes to the garage?
Thanks for any help.
I had a similar problem 3 months ago and mine was a snapped cable on the crack sensor (after a refuel which was strange) but it might be for a number of other reasons such as
a) Fuel cap not closed properly
b) Fuel overfill - and contamination of the sensors
Unless you have an OBDII tool then you will not know what caused it but its worth checking the above. You might be able to reset the light by removing the battery temporarily so as to reset the ECU
As suggested, try a) above, and also check that the 'O' ring is seated in the cap properly.
On an '03 you don't need to disconnect the battery to reset the ECU adaptation. Switch the ignition on, but do not touch the throttle pedal, for one minute. Then switch off the ignition for at least 10 seconds. This resets the adaption values in the ECU to factory settings.
Most likely cause of the Engine Management Warning Light is:
1) Mass air flow sensor om air intake.
2) Lambda or Oxygen Sensor in Cat Tubes in exhaust system.
On the Water Temperature could be the "temperature switch" or the fan relays.
Regards Big Bob
Thanks for the replies. Tried the ignition reset but light still on. I,ll run it to the dealer tomorrow and get the sensors checked.
Once again thanks for the help.
Just a quick thought......
Do you think a faulty sensor will be covered by the Porsche extended warranty I took out last June? OPC will be doing the work.
Thanks again :thumbs:
> b) Fuel overfill - and contamination of the sensors
I don't understand this. Why would overfilling your car with petrol cause an issue with the sensor?
I thought the only symptom was wet shoes?
I'm with you on that GD, I cant see how overfilling which is an external event to the fuel system can contaminate the sensors.
If however because the tank is totally full an increase in temperature presurises the tank and pushes neat fuel into the system, this might leach some fuel into the sensor areas especially thos 2 on the inlet side.
Regards Big Bob :bye:
I was told that an oxygen sensor exist near the fuel tank having a better look at some diagrams
https://techinfo.porsche.com/techinfo/pdf/en/catalogues/E_997_KATALOG.pdf
It looks like there is nothing as such
This is a source reference. Confirm exact model applicability in the original material.
