Oxygen Sensor Circuit Malfunction (Bank 1 Sensor 2)

FAULT ID
P0136

TITLE
Oxygen Sensor Circuit Malfunction (Bank 1 Sensor 2)

BACKGROUND
The engine control module checks for an open circuit in the heated oxygen sensor output line.

RANGE OF CHECK & SET CONDITIONS
The heated oxygen sensor output line is open-circuit.

EFFECT
Limp-in
- Performs the closed loop control of the air/fuel ratio by using only the signal of the heated oxygen sensor (front) installed on the front side of the catalytic converter.

PROBABLE CAUSES
- Heated oxygen sensor failed.
- Engine control module failed.
- Open circuit in heated oxygen sensor output line.