The Check Engine Light may illuminate because the mass air flow sensor sends incorrect information to the engine control computer. This can cause a loss of power on acceleration. A failed mass air flow sensor will require replacement.
Average mileage: 132,042 (49,000–201,000)
22 people reported this problem
obd codes P0171 system too lean bank 1 P0174 system too lean bank 2 P1150 AF Ratio range performance bank 2 sensor 1. first cleaned MAF meter at air box with no success. checked air filter, looks new. checked all vaccum hoses for leaks, ok. replaced MAF, reset CEL by pulling EFI fuse under hood, road tested under malfunction scenario, good to go! no CEL. will verify with more mileage to be totally sure.
Check engine light has been on for 5 years with no other problem. The last 4 weeks the car has not had much power - goes to 4 rpm's just to get to 60 mph. Brought to mechanic who said it's not the transmission but 02 sensor and air flow sensor. Wants to charge $1700 to take care of it. Is this absurd?