2A77 - P105B

2020 BMW 128i Coupe (E82) L6-3.0L (N51) Diagnostic Trouble Codes ( DTC ): Service instruction

none

2A77 - P105B (DME)

2A77 - P105B

Information saved in

DME

Fault code

2A77 - P105B

Fault text

Control module, internal fault: Valvetronic output stage

Fault description

Internal Control Module VVT Error, VoltageToo Low

Condition for fault identification

Test condition:

Undervoltage in power supply to driver circuit has been detected (ATIC61 diagnosis)

Terminal condition: Terminal 15 ON Voltage condition:

Battery voltage > 9.953125V and battery voltage < 25.898438V

Condition for fault memory entry

0.2

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:

Fault entry in info memory only