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


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE)

INSPECT A/F RELAY

INSPECT HV CONTROL ECU (HA1A AND HA2A TERMINALS)

CHECK HARNESS AND CONNECTOR (A/F SENSOR - HV CONTROL ECU, A/F SENSOR - A/F RELAY)