2A3C - P1057

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