2020 BMW 128i Coupe (E82) L6-3.0L (N51) Diagnostic Trouble Codes ( DTC ): Service instruction
none
2F99
2F99 - P0071
Information saved in
DME
Fault code
2F99 - P0071
Fault text
Ambient temperature sensor, plausibility
Fault description
Ambient Air Temperature Sensor Range/Performance
Condition for fault identification
Test condition:
PLAUS
Terminal condition: no invariable debounce time, constant sensor data reading during engine warm-up produces entry Voltage condition:
Terminal 15 ON
Condition for fault memory entry
Plausibility monitoring of ambient temperature sensor with end of start phase recognized
Action in service
Constant, invariable sensor signal: Sticking sensor, sensor manipulation
Fault effect and breakdown warning
Driver information
Warning light:
Visual inspection of sensor
Electrical check on sensor wire and power supply wire
Check sensor data response to motion
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