DTC    P0031    Oxygen Sensor Heater Control Circuit Low (Bank 1 Sensor 1)

DESCRIPTION

MONITOR DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT HEATED OXYGEN SENSOR (HEATER RESISTANCE)

INSPECT INTEGRATION RELAY (EFI MAIN)

CHECK ECM (HT1A, HT2A, HT1B, HT2B VOLTAGE)

CHECK WIRE HARNESS (HEATED OXYGEN SENSOR - ECM)

CHECK WIRE HARNESS (HEATED OXYGEN SENSOR - INTEGRATION RELAY)