P0159

Oxygen Sensor Post Cat Bank 2 Switch Time Above Limit

P0159 - Post catalyst oxygen sensor response bank 2.: Short circuit to V Batt.

Possible causes:
1. Oxygen sensor post catalyst bank 2.

1. Oxygen sensor post catalyst bank 2.
CHECK THE FOLLOWING:
- If the heater for this oxygen sensor has a fault recorded for it, this could have affected the operation of the oxygen sensor. Rectify any heater fault first.
- Remove the oxygen sensor and examine the side internal to the exhaust system and the side outside the exhaust system. Both sides of the sensor should be free from contamination. Gas must be able to be absorbed by both sides of the sensor.
- Also check the sensor for any mechanical damage or cracks.

INFORMATION
- If the oxygen sensor shows signs of damage or contamination that cannot be cleaned it should be renewed.