P0171 - Ford TypePowertrain - Fuel and Air Metering - ISO/SAE Controlled Description Fuel System Too Lean Conditions Cause Engine running at Cruise speed for 3-4 minutes, then the PCM detected that the Adaptive Fuel Control System was at its rich correction limit (due to a lean A/F ratio...
The OBDII trouble code P0171 - System Too Lean (Bank 1) means that the engine air-fuel mixture is too lean, or there is too much air and too little fuel. Driving a car with the code P0171 can cause more damage to the engine over time, as when the engine runs lean, the combustion...
Fordisyingthegraph,enter”ACTIVETEST/A/FCONTROL/USERDATA”,select”AFSB1S1andO2S B1S2”bypressing”YES”andpush”ENTER”.Thenpress”F4”. HINT: Readzeframedatausing.zeframedatarecords theengineconditionswhenamalfunctionisdetected.Whentroubleshooting,zeframedan helpdetermineifthevehiclewasrunningorstopped,...
So this engine code article applies to Toyota, Chevrolet, Ford, Nissan, Honda, GMC, Dodge, etc.Basically this means that an oxygen sensor in bank 1 has detected a lean condition (too much oxygen in the exhaust). On V6/V8/V10 engines, Bank 1 is the side of the engine that has ...