P0156

Oxygen Sensor Post Cat Bank 2 Open Circuit

P0156 - Oxygen sensor post-catalyst bank 2.: Open circuit or No signal.

Possible causes:
1. Connector MS43 ECM C604, Oxy Sensor Post Cat Bank 2 C642, Engine Fusebox C578.
2. Open circuit C604/17 (GN) - C642/2 (GN).
3. Open circuit C604/24 (BG) - C642/1 (BG).
4. Oxygen sensor post catalyst bank 2.
5. MS43 ECM.

1. Connector MS43 ECM C604, Oxy Sensor Post Cat Bank 2 C642, Engine Fusebox C578.
CONNECTOR
Check for connector not correctly latched, backed out pins, damaged pins, corroded pins

2. Open circuit C604/17 (GN) - C642/2 (GN).
OPEN_CIRCUIT
Check resistance > 1M Ohms.

3. Open circuit C604/24 (BG) - C642/1 (BG).
OPEN_CIRCUIT
Check resistance > 1M Ohms.

4. Oxygen sensor post catalyst bank 2.
No detail available for this fault

5. MS43 ECM.
No detail available for this fault