P0131

Oxygen Sensor Pre Cat Bank 1 Short Circuit To Ground

P0131 - Oxygen sensor pre-catalyst bank 1.: Short circuit to ground.

Possible causes:
1. Short circuit C604/14 (UN) - Ground.
2. MS43 ECM.

1. Short circuit C604/14 (UN) - Ground.
SHORT_CIRCUIT
Check resistance < 5.0 Ohms.

2. MS43 ECM.
No detail available for this fault