P0171 LEAN CONDITION FAULT CODE CHEVY COLORADO

Possible causes
Intake air leaks
Faulty front heated oxygen sensor
Ignition misfiring
Faulty fuel injectors
Exhaust gas leaks
Incorrect fuel pressure
Lack of fuel
Faulty Mass Air Flow (MAF) sensor
Incorrect Positive Crankcase Ventilation (PCV) hose connection.
in this truck, a bad fuel pump caused the DTC P0171 to set in PCM memory

[@mahmoudhantouli5434]

Fuel pump problems

[@federicoperez314]

Cual fue el problema

[@evoixdelaluz]

bomba de gasolina no tenia suficiente presion, asi la mescla de gasolina y aire no era adecuada. el modulo del motor activo el codigo de falla P0171.