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Guys, I have acrapovic exhaust and last OEM DME software without any tune.
For a long time I had only two DME error codes:
2789 - Catalytic-converter conversion, bank 1
278A - Catalytic-converter conversion, bank 2
So it is normal because acra does not have the cats.
Sometime ago I got more error codes:
2727 - Oxygen sensor before cat., bank 2, plausibility
277D - Oxygen sensor trim control diagnosis, bank 2
27C7 - Oxygen sensor, adaptation, trim control, bank 2
So, I desided to replace my pre-cat O2 sensor driver side. Yesterday I replaced it. Today I deleted all error codes and drove my car. Gets approx 100 km and I see the MIL (small check engine light) on my dashboard. I read my error codes again and I see the next errors:
277D - Oxygen sensor trim control diagnosis, bank 2
27C7 - Oxygen sensor, adaptation, trim control, bank 2
What's wrong? Maybe the reason is something other than my bank 2 O2 sensor?
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