P0043

P0043, P0044 HO2S3 HEATER

Description

SYSTEM DESCRIPTION

The ECM performs ON/OFF control of the heated oxygen sensor 3 heater corresponding to the engine speed, amount of intake air and engine coolant temperature.

OPERATION

DTC Logic

DTC Detection Logic

DTC Confirmation Procedure

Step 1-2:

Step 2 (Continued):

Diagnostic Procedure

Step 1-4:

Step 4 (Continued)-8:

Component Inspection