P0158

P0158

02 Sensor Circuit High Voltage

Diagnostic conditions
- Battery positive voltage between 10 V and 16 V
- Exhaust temperature less than 800 °C
- Oxygen sensor heating switched on for at least 120 seconds

Possible cause of fault
- Short circuit to B+ in signal wire
- Oxygen sensor faulty
- Control module faulty

Affected pins
DME control module connector II, pin 8 and oxygen sensor jack, bank 2, pin 3

DME control module connector II, pin 14 and oxygen sensor jack, bank 2, pin 4

Diagnosis/troubleshooting

NOTE:Do not use contact spray on the oxygen sensor plug connections as this may cause irreparable damage to the wiring (contamination of the oxygen sensor via the reference air channel).