P0031
2010 Porsche Cayenne Turbo (9PA) V8-4.8L Turbo Page 7
P0031
Diagnosis information - DME V8 DFI
Driver for oxygen sensor heater ahead of catalytic converter, bank 1
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 confuse oxygen sensor ahead of catalytic converter and oxygen sensor behind catalytic converter as this will cause implausible fault
entries.
Diagnostic conditions
- Vehicle voltage > 9 V
- Engine running > 10 seconds
- Oxygen sensor heater ahead of catalytic converter active
Possible fault causes
- Short circuit to B+
- Short circuit to ground
- Open circuit in line
- Fuse FE 17 faulty (fuse carrier in plenum panel E-box)
- Loose contact in connector
- Oxygen sensor faulty
Affected contacts on the DME control unit connector
Connector [A]:
- Contact 33
Affected contacts on the oxygen sensor connector ahead of catalytic converter, bank 1:
- Contact 3
2010 Porsche Cayenne Turbo (9PA) V8-4.8L Turbo Page 7
P0031
Diagnosis information - DME V8 DFI
Driver for oxygen sensor heater ahead of catalytic converter, bank 1
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 confuse oxygen sensor ahead of catalytic converter and oxygen sensor behind catalytic converter as this will cause implausible fault
entries.
Diagnostic conditions
- Vehicle voltage > 9 V
- Engine running > 10 seconds
- Oxygen sensor heater ahead of catalytic converter active
Possible fault causes
- Short circuit to B+
- Short circuit to ground
- Open circuit in line
- Fuse FE 17 faulty (fuse carrier in plenum panel E-box)
- Loose contact in connector
- Oxygen sensor faulty
Affected contacts on the DME control unit connector
Connector [A]:
- Contact 33
Affected contacts on the oxygen sensor connector ahead of catalytic converter, bank 1:
- Contact 3