What does the code p0171 mean on stangnet?
What does the code p0171 mean on stangnet? It cam up with P0171 and P0174. These codes mean: P0171 (O2 Bank 1, Sensor 1 Lean) and P0174 (O2 Bank 2, Sensor 1 Lean). What does lean fault code p0171 mean on a car? Your car or truck has either a P0171, P0174 lean fault code or both stored in the pc, these codes derive from Oxygen Sensor (O-2) readings. A lean code or codes suggest that there surely is too-much air in the exhaust. What are the codes on my 1997 Mustang GT? I bought my 1997 Mustang GT, 5...