P0071
P0071
Diagnosis information - DME V8 DFI
Ambient temperature (via CAN from instrument cluster)
NOTE:
This fault is stored if the ambient temperature sent by the instrument cluster deviates from the calculated ambient temperature (from temperature
model) by more than 25 °C (77 °F).
The temperature model depends mainly on the measured intake air temperature.
Diagnostic conditions
- No other DME fault codes set
- Driving > 80 km/h (50 mph) for > 15 minutes,
- then directly after this 1 minute of driving under the following conditions:
- Coolant temperature 47 °C ... 108 °C (117 °F ... 226 °F)
- Engine speed 1,200 ... 4,000 rpm
- Speed 30 ... 180 km/h (19 ... 112 mph)
Possible fault causes
- Ambient temperature incorrect (sensor trimming incorrect/faulty)
- Intake air temperature incorrect (sensor trimming incorrect/faulty)
- Turbo only:
- Intake air temperature incorrect due to charge-air cooler blocked, faulty, modified...