General E46 Forum
Help me solve this problem. My SES light came on sunday, so I dropped by autozone to see what was up. They were as follows:
P0155 O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 1)
P0171 System too Lean (Bank 1)
P0174 System too Lean (Bank 2)
I have had the P0155 go off before and was...