P0031

P0031, P0032 A/F SENSOR 1 HEATER

Description

SYSTEM DESCRIPTION

The ECM performs ON/OFF duty control of the A/F sensor 1 heater corresponding to the engine operating condition to keep the temperature of A/F sensor 1 element at the specified range.

DTC Logic

DTC Detection Logic

DTC Confirmation Procedure

Step 1-2:

Diagnostic Procedure

Step 1:

Step 2-7:

Component Inspection