P0140
P0140
Diagnosis information - DME (DFI)
Oxygen sensor behind catalytic converter, bank 1, open circuit
NOTE:
- Do not use contact spray on the oxygen sensor's plug connections as this will result in irreparable damage to the lines (blockage of reference
air duct).
- Do not interchange the oxygen sensor ahead of catalytic converter with the sensor behind the catalytic converter as this will result in
implausible fault entries.
Diagnostic conditions
- Perform short test [Oxygen sensor active test]
or (if no short test is possible):
- Engine at operating temperature
- then drive for 2 minutes
- then engine idling > 30 seconds
Possible fault causes
2010 Porsche Cayman S (987) F6-3.4L Page 195
- Open circuit in signal line and / or ground line of oxygen sensor
- Loose contact in connector
- Oxygen sensor behind catalytic converter, bank 1, faulty
P0140
Diagnosis information - DME (DFI)
Oxygen sensor behind catalytic converter, bank 1, open circuit
NOTE:
- Do not use contact spray on the oxygen sensor's plug connections as this will result in irreparable damage to the lines (blockage of reference
air duct).
- Do not interchange the oxygen sensor ahead of catalytic converter with the sensor behind the catalytic converter as this will result in
implausible fault entries.
Diagnostic conditions
- Perform short test [Oxygen sensor active test]
or (if no short test is possible):
- Engine at operating temperature
- then drive for 2 minutes
- then engine idling > 30 seconds
Possible fault causes
2010 Porsche Cayman S (987) F6-3.4L Page 195
- Open circuit in signal line and / or ground line of oxygen sensor
- Loose contact in connector
- Oxygen sensor behind catalytic converter, bank 1, faulty