2020 BMW 128i Coupe (E82) L6-3.0L (N51) Diagnostic Trouble Codes ( DTC ): 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
Ignition off, let control module return to dormant state as indicated, restart
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
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