DTC    P0171    System Too Lean (Bank 1)

DESCRIPTION

MONITOR DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0171, P0172, P0174 OR P0175)

CHECK CONNECTION OF VENTILATION HOSE

CHECK AIR INDUCTION SYSTEM

PERFORM ACTIVE TEST (CONTROL)

READ DATA LIST (COOLANT TEMP)

READ DATA LIST (MAF)

CHECK FUEL PRESSURE

CHECK FOR EXHAUST GAS LEAKAGE

CHECK FOR SPARK AND IGNITION

INSPECT FUEL INJECTOR

INSPECT HEATED OXYGEN SENSOR

INSPECT A/F RELAY

CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR (SENSOR 1) - ECM)

REPLACE HEATED OXYGEN SENSOR

PERFORM CONFIRMATION DRIVING PATTERN