Hi Scotty,

I own a Volkswagen Polo Petrol 1.2 MPI 2013 highline. I am located in India. The car is only E10 compliant and the government has mandated E20 as the only fuel for past 1 year. I am having Check engine light repeatedly. Initially it showed- P0068, P017100, 03302, P307A00 using bluetooth OBD scanner and car scanner app. I had throttle body and MAP sensor cleaned. The car does not have MAF sensor. After resetting the codes. the car ran fine for few days without check engine light. But STFT remains at 10-15% and STFT swings upto +25% during driving. My car mechanic was not able to find any leak and i checked EVAP purge valve suction test after putting car in idle. It was OK. I thought the high fuel trim data could be due to E20 petrol. Today i got the fuel refilled to full from reserve and check engine light came as soon as i left the fueling station. I had noticed similar thing before that check engine light came soon after fuel refilling. Today it showed P0171 and 11730. Can you tell me what i should be doing and also If I should consider selling the car soon. I am the first owner and I have tried to maintain my car for past 13 years.