2010 Porsche Cayenne S (9PA) V8-4.8L A L L Diagnostic Trouble Codes ( DTC ): P Code Charts Page 21
Possible fault causes
- Short circuit to B+ in signal line
- Oxygen sensor faulty (short circuit to B+)
Affected contacts on the DME control unit connector
Connector [A]:
- Contact 45
- Contact 49
- Contact 50
Affected contacts on the oxygen sensor connector behind catalytic converter, bank 1:
- Contact 2
- Contact 3
- Contact 4
P0140
P0140
Diagnosis information - DME V8 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).
NOTE: 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
- Engine at operating temperature
- then drive for 2 minutes
- Then engine idling > 30 seconds
Possible fault causes
- Open circuit in signal line and / or ground line of oxygen sensor
- Loose contact in connector
- Oxygen sensor behind catalytic converter, bank 1, faulty
Affected contacts on the DME control unit connector
Connector [A]:
- Contact 49
- Contact 50
Affected contacts on the oxygen sensor connector behind catalytic converter, bank 1:
- Contact 3
- Contact 4
P0141
P0141
Diagnosis information - DME V8 DFI
Heater circuit, oxygen sensor behind cat. converter, bank X
NOTE: Do not use contact spray on the oxygen sensor plug connections, as this may cause irreparable damage to the wiring (blocking the reference
air channels).
NOTE: 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
- Engine running
- Oxygen sensor heater control active > 60 seconds
- Lambda control active
- No driver fault of oxygen sensor stored
Possible fault causes
- Contact resistance between DME control unit and oxygen sensor heater behind catalytic converter, bank X