P0132

DTC P0132 Linear O2 Sensor Circuit High Input (Bank1, Sensor1)

DESCRIPTION

The linear oxygen sensor is mounted on the front side of the Catalytic Converter (warm-up catalytic converter) or in the front exhaust pipe, which detects a wide range of air/fuel ratio in the exhaust gas from rich to lean regions. This linear oxygen sensor produces a current that corresponds to a specific air/fuel ratio. The ECM monitors this signal and determines whether the air/fuel mixture is rich or lean. The ECM constantly monitors the HO2S and increases or decreases the fuel injection duration by using the HO2S signal, which is called closed-loop fuel control operation.

Detecting Condition & Limp Home:

DTC DETECTING CONDITION

1. DTC Description
The control unit of the linear oxygen sensor built inside the ECM monitors short circuit error on all front Heated Oxygen Sensor (HO2S) control lines (PIN#19, PIN#40, PIN#41 and PIN#53) and ECM sets P0132 with short circuit to ground If same code is set again in the next driving cycle, MIL is illuminated.

2. Conditions for Setting the DTC

Step 1 - 3:

Step 4:

Inspection Procedure