P0030

Oxygen Sensor Heater Pre Cat Bank 1 Open Circuit

P0030 - Pre-catalyst oxygen sensor heater bank 1.: Open circuit or No signal.

Possible causes:
1. Connector MS43 ECM C604, Oxy Sensor Pre Cat Bank 1 C644, Engine Fusebox C578.
2. Open circuit C578/11 (YG) - C644/3 (YG).
3. Open circuit C604/1 (UY) - C644/4 (UY).
4. Engine compartment fusebox Fuse 3.
5. Oxygen sensor pre catalyst bank 1.
6. MS43 ECM.

1. Connector MS43 ECM C604, Oxy Sensor Pre Cat Bank 1 C644, Engine Fusebox C578.
CONNECTOR
Check for connector not correctly latched, backed out pins, damaged pins, corroded pins

2. Open circuit C578/11 (YG) - C644/3 (YG).
OPEN_CIRCUIT
Check resistance > 1M Ohms.

3. Open circuit C604/1 (UY) - C644/4 (UY).
OPEN_CIRCUIT
Check resistance > 1M Ohms.

4. Engine compartment fusebox Fuse 3.
No detail available for this fault

5. Oxygen sensor pre catalyst bank 1
No detail available for this fault

6. MS43 ECM.
No detail available for this fault