2A43 - P107C (DME)
2A43 - P107CInformation 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 °C
Action in service
If no tampering/abuse can be detected the following tests
should be carried out:
1. Check for correct reluctor attachment at VVT sensor.
2. Use tester to manually activate the E-box fan for acoustic
check.
3. DME installed according to specification and check to
verify installation of spacer plate (to guide airflow in E-
Box).
4. Check wiring harness between VVT motor and DME for
soft shorts between the two VVT motor wires and vehicle
ground
5. 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)
6. 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
Service instruction
none