2019 BMW 128i Convertible (E88) L6-3.0L (N51) A L L Diagnostic Trouble Codes ( DTC ): Manufacturer Code Charts Page 102
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
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:
Fault entry in info memory only
Service instruction
none
2A80 - P0010 (DME)
2A80 - P0010
Information saved in
DME
Fault code
2A80 - P0010
Fault text
Intake VANOS, activation
Fault description
'A' Camshaft Position - Actuator Circuit/Open (Bank 1)
Condition for fault identification
Test condition:
Monitoring of VANOS control
Engine speed > 500 rpm
Terminal condition: Terminal 15, engine on
Voltage condition:
Voltage in onboard electrical system > 10 V
Condition for fault memory entry
none
Action in service
1Check wiring
Repair if defective
If wiring is OK proceed
