P0141

P0141

02 Sensor Heater Circuit

Signal Implausible

Diagnostic conditions
- Exhaust temperature between 300°C and 600°C
- Battery positive voltage between 10 V and 16 V

Possible cause of fault
- Corrosion in connector
- Oxygen sensor faulty

Affected terminals
DME control module connector II, pin 7 and oxygen sensor jack, bank 1, pin 2

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).







Open circuit

Diagnostic conditions
- Engine running

Possible cause of fault
- Resistance of oxygen sensor heating too high
- Open circuit

Affected terminals
DME control module connector II, pin 7 and oxygen sensor jack, bank 1, pin 2.

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).







Below limit

Diagnostic conditions
- Engine running

Possible cause of fault
- Short circuit to ground in triggering wire
- Corrosion in connector
- Oxygen sensor faulty
- DME control module faulty

Affected terminals
DME control module connector II, pin 7 and oxygen sensor jack, bank 1, pin 2.

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).







Above limit

Diagnostic conditions
- Engine running

Possible cause of fault
- Oxygen sensor faulty (heating)
- Short circuit to B+
- DME control module faulty

Affected terminals
DME control module connector II, pin 7 and oxygen sensor jack, bank 1, pin 2.

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).