Right then. This is what I did, I will give my version of the fix and Leave this open for Debate to Anyone that can give a better explanation of what caused the problem.

The Car originally came in for the light turning off and they mentioned that the starter motor was a little noisy and groaned a bit as it was coming out of mesh.

I connected lexia and got the code for fuel trim malfunction, I erased the code, Started the car and the light came straight back on, Which i thought was weird for a fuel trim code, Which i would have expected to come back on after a few drive cycles if a fault was still present. ??

I tried this several times and even tried a different scanner, I also noticed that the codes had been cleared about 21 times previously and most appeared to have been done within the last couple of months. ( possibly thats why it was traded in ). ?

Anyway, I had this silly theory that as it happened immediately on start up and it had a noisy starter motor ( not really excessive and i wouldn't have thought about it unless the customer had mentioned it ) that it could be the cause of the problem. ?

So I Cleared the codes, Bump started the car and the light went out with no stored codes.

We then replaced the starter motor and it started fine and the light stayed out.

I Also checked the Battery and the specific gravities were all over the place, So for good measure we Replaced the battery but the car appeared to be fixed before the new battery was fitted.


So was the starter motor the cause of the light coming back on immediately or was it cured due to the battery disconnection. ?? ( if its due to the battery disconnection, why did the light go out when it was bump started ). ??

Tony.