2020 BMW 128i Coupe (E82) L6-3.0L (N51) Diagnostic Trouble Codes ( DTC ): P Code Charts Service instruction
none
P107C
2A43 - P107C
Information saved in
DME
Fault code
2A43 - P107C
Fault text
Valvetronic, thermal overload protection: warning threshold
Fault description
VVT-Overload Protection Temperature Too High
Condition for fault identification
Test condition:
The temperature of the VVT driver circuit in the DME is monitored, and the system responds to overheating by reverting to VVT emergency mode operation - the vehicle continues to operate, but in throttled mode. Incorrect use of the pedal-position sensor, consisting of rapid, repeated pressure extending over several minutes heats up the VVT driver circuit in the DME, leading to its deactivation when it reaches a critical level.
Terminal condition: Terminal 15 ON Voltage condition:
none
Condition for fault memory entry
after Terminal 15 switch and/or always active if DME is awake.
VVT driver circuit in the DME: Warning threshold 112 锟斤拷C
Action in service
If no tampering/abuse can be detected the following tests should be carried out:
Check for correct reluctor attachment at VVT sensor.
Use tester to manually activate the E-box fan for acoustic check.
DME installed according to specification and check to verify installation of spacer plate (to guide airflow in E- Box).
Check wiring harness between VVT motor and DME for
soft shorts between the two VVT motor wires and vehicle ground
Defective VVT servo motor (for instance, interturn short circuit)
- Replace servo motor and determine whether malfunction is still present (Clear fault memory / switch terminals on ignition)
If malfunction is still present, replace DME.
Fault effect and breakdown warning
Driver information
Warning light:
ECE: No warning message. Engine reverts to VVT emergency backup mode (throttled operation) US: OPEN
