P0112
P0112
Diagnosis information - DME V8 DFI
Intake air temperature sensor: electric fault
NOTE:
- Only turbocharged engine:
The intake air temperature sensor is integrated in the boost pressure sensor.
- Only naturally-aspirated engine:
The intake air temperature sensor is integrated in the hot-film mass air flow sensor 1 (right).
NOTE:
- Only naturally-aspirated engines:
- Cross-exchange is possible because both hot-film mass air flow sensors including tubular piece are identical, but the intake air temperature
sensor is used only on the right.
- The hot-film mass air flow sensor must not be removed, but only interchanged complete with tubular piece.
Diagnostic conditions
- Engine running > 2 minutes
- Mass air flow < 150 kg/h
Possible fault causes
- Short circuit to B+ in signal line
- Short circuit to ground in signal line
- Open circuit in the signal line
- Short circuit or open circuit in power supply (naturally aspirated)
- Short circuit or open circuit in ground supply (Turbo)
- Intake air temperature sensor faulty
- Only naturally-aspirated engines:
- Affected contacts on the DME control unit connector:
- Connector [A] contact 27
- Affected contacts on the hot-film mass air flow sensor 1 connector:
- Contact 1
- Contact 2
- Turbo only:
- Affected contacts on the DME control unit connector:
- Connector [B] contact 41
- Affected contacts on the boost pressure sensor connector:
2010 Porsche Cayenne Turbo (9PA) V8-4.8L Turbo Page 16
- Contact 2
- Contact 1