Last night my engine warning light came on briefly for about 20 miles until I stopped to fill up then it went off again.
I've recently had a remap and started using 99 RON fuel.
I've checked my error codes using a Peake code reader and I got the following codes:
E3 - O2 sensor adaptation limit cylinder # 1-3
E4 - O2 sensor adaptation limit cylinder # 4-6
Do you think this could just be a faulty pre cat O2 sensor or something more to it than that. Could this be signs of an air leak?
It seems a coincidence that I've just had the remap done and used about 2 tanks of Tesco Momentum and now I get this light come on for the first time ever.
Any opinions or suggestions would be very much appreciated.
Thanks in advance,
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