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