How To Fix a P0171 OBDII Error Code (Troubleshooting and Diagnosing)
If you have a vehicle with a P0171 error code, the onboard computer (ECM) is reading a problem with the air/fuel ratio. An OBDII scan tool will give the error message “P0171 “Bank 1 System Too Lean.” The P0171 code is a notorious engine error that can be caused by several things. Unlike many ODBII… Read More »