2010 BMW 128i Convertible (E88) L6-3.0L (N52K) Manufacturer Code Page 95
angles, the operative assumption will that substantial repairs
have been carried out on the cylinder head. The VVT travel
limit positions must be re-initialized.
No VVT sensor faults should be present (#10800,
#10801,#10802).
Terminal condition: Terminal 15 ON
Voltage condition:
none
Condition for fault memory entry
Following successful travel limit initialization routine (can
be initiated by tester),
active only once at moment when system starts (DME wakeup).
Action in service
Conduct travel limit initialization routine using tester for
activation. Delete stored fault codes from DME fault
memory and initiate dormant vehicle state. Repeat procedure
in case of doubt.
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
2A43 – P107A (DME)
2A43 – P107A
Information saved in
DME
Fault code
2A43 – P107A
Fault text
Valvetronic, thermal overload protection: warning threshold
Fault description
VVT-Overload Protection Control Motor Current Too High
Condition for fault identification
Test condition:
The engine-management system monitors the VVT motor’s
current draw. If the monitored current draw exceeds a
defined threshold for several seconds the VVT system is
deactivated (VVT emergency operation mode), and the
engine reverts to throttled operation.
Terminal condition: Terminal 15 ON
Voltage condition:
none
Condition for fault memory entry
always active when DME is awake
current threshold roughly 24A,
Action in service
1. Check for correct reluctor attachment at VVT sensor.
2. Defective VVT servo motor (for instance, interturn short
circuit) Check servo motor and replace as indicated
3. Check wiring harness from VVT motor to DME for shorts
between the two VVT wires and vehicle ground.
4. If abuse is suspected: Clear fault memory from DME
