O2 Sensor Circuit No Activity Detected
Diagnostic conditions
- Exhaust temperature between 250°C and 750°C
- Battery positive voltage between 10 V and 16 V
- Time elapsed after engine start-up greater than 200 seconds
- Oxygen sensor heating switched on for at least 120 seconds
Possible cause of fault
- Loose contact or corrosion in connector
- Open circuit in the oxygen sensor signal wire
- Open circuit in the oxygen sensor ground wire
- Oxygen sensor faulty
- DME control module faulty
Affected terminals
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