2010 BMW 128i Convertible (E88) L6-3.0L (N52K) P Code Charts
none
P105B
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
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
DIAGNOSIS AND REPAIR, MAINTENANCE, PARTS AND LABOR, SHOP OPERATIONS, TECHNICIAN'S REFERENCE, DIAGNOSTIC TROUBLE CODES(dtc), RELAYS AND MODULES, SENSORS AND SWITCHES,ENGINE, COOLING AND EXHAUST, POWERTRAIN MANAGEMENT, TRANSMISSION AND DRIVETRAIN, BRAKES AND TRACTION CONTROL, STARTING AND CHARGING, POWER AND GROUND DISTRIBUTION, STEERING AND SUSPENSION, HEATING AND AIR CONDITIONING, RESTRAINTS AND SAFETY SYSTEMS, ACCESSORIES AND OPTIONAL EQUIPMENT, BODY AND FRAME,CRUSIS CONTROL.