2010 BMW 128i Convertible (E88) L6-3.0L (N52K) Manufacturer Code Page 66
Ignition off, wait for control module to return to dormant
“sleep” state, run travel limit initialization routine again or
trigger travel limit initialization routine manually
Fault effect and breakdown warning
Driver information
Warning light:
Limp-home operation 1
Service instruction
none
2A3C
2A3C – P1057
Information saved in
DME
Fault code
2A3C – P1057
Fault text
Valvetronic relay, activation
Fault description
VVT-Supply Voltage Control Motor Electrical (Bank 1)
Condition for fault identification
Test condition:
The voltage at the capacitors is monitored. If this is below
an offset of the battery voltage an fault symptom is
registered
Terminal condition: Main relay ON
Voltage condition:
none
Condition for fault memory entry
0.05
Action in service
1. Ignition off, let control module return to dormant state as
indicated, restart
2. If Item 1 is not OK, it will be necessary to check the
electronics in the control module
Fault effect and breakdown warning
Driver information
Warning light:
Emergency default mode 2
Service instruction
none
2A3D – P1047 (DME)
2A3D – P1047
Information saved in
DME
Fault code
2A3D – P1047
Fault text
Valvetronic, actuator motor: activation
