P1171 OBD Trouble Code

1 result found

P1171 - GM
Type	Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description	Fuel System Lean During Acceleration Conditions
Cause	No PCM codes set, engine running in closed loop, Fuel Cutoff Mode inactive, then the PCM detected that the HO2S-11 signal was lean for 3 seconds during the Power Enrichment Mode portion of the HO2S test