P1675

P1675

Diagnostic information - DME (DFI)

Engine compartment purge fan

NOTE: Diagnosis detects if the engine compartment temperature does not fall by min. 1.5 °C (2.7 °F) even though the purge fan should be running. This may also be the case, for example, if the vehicle is covered when the engine is warm (car cover).

Diagnostic conditions
- 911 only: The rear lid must be closed.
- Ignition on or engine running or control unit in after-run mode
- Engine compartment purge fan stage 2 activated more than 230 Second(s)
- not at 911 Turbo:
- Engine compartment temperature more than 90 °C (°F)

- only at 911 Turbo:
- Engine compartment temperature more than 80 ... more than 94 °C (°F), at Ambient temperature Less than 10 ... more than 40 °C (°F)

Possible fault causes
- Air intake covered or blocked
- Engine compartment temperature sensor has fallen out of holder (sensor is lying on engine)
- Electrical fault in supply line(s) to engine compartment purge fan
- Mechanical fault in engine compartment purge fan relay
- Engine compartment purge fan faulty (mechanical or electrical fault, sluggish)
- Engine compartment temperature sensor faulty