BMW M3 & M5 Throttle Actuator fault - 2B15 , 2B16
E90, E92, E93, E60, E63, E64
This throttle actuator is a very common problem for all BMW M5 & M3 vehicles fitted with the S85 & S65 engines. Failure of the throttle actuator will cause the engine to go into ‘limp-mode’ with the DSC and EML light illuminated on the instrument cluster. The common faults codes are: ‘2B15 – Throttle valve actuator bank 1’ & 2B16 – Throttle valve actuator bank 2’. Often the engine may run fine for around 5 minutes or so before these symptoms occur.
This throttle actuator is a very common problem for all BMW M5 & M3 vehicles fitted with the S85 & S65 engines. Failure of the throttle actuator will cause the engine to go into ‘limp-mode’ with the DSC and EML light illuminated on the instrument cluster. The common faults codes are: ‘2B15 – Throttle valve actuator bank 1’ & 2B16 – Throttle valve actuator bank 2’. Often the engine may run fine for around 5 minutes or so before these symptoms occur.
This throttle actuator is a common problem due to a design flaw from when the internal gears were first manufactured, causing them to wear prematurely and overload the internal electronics that control the actuator. When we rebuild your own throttle actuator, we replace all internal components with higher rated versions, therefore ensuring that the actuator will not fail again.
Common failure symptoms:
Loss of Power
Vehicle going into ‘limp-mode’
DSC & EML light on
Common fault codes:
2B15 – Throttle valve actuator governor monitoring/control bank 1
2B16 - Throttle valve actuator governor monitoring/control bank 2
2B21 – Throttle valve actuator pre-drive check bank 1
2B22 – Throttle valve actuator pre-driver check bank 2
2B25 – Throttle valve monitoring bank 1
2B26 – Throttle valve monitoring bank 2
27A1 – Throttle valve actuator enable line bank 1
27A2 – Throttle valve actuator enable line bank 2
2B57 – Safety concept manager action
CDCD – Throttle valve actuator CAN message
Common failing part numbers:
A2C53142839
A2C53046176
A2C53032056
Common failure symptoms:
Loss of Power
Vehicle going into ‘limp-mode’
DSC & EML light on
Common fault codes:
2B15 – Throttle valve actuator governor monitoring/control bank 1
2B16 - Throttle valve actuator governor monitoring/control bank 2
2B21 – Throttle valve actuator pre-drive check bank 1
2B22 – Throttle valve actuator pre-driver check bank 2
2B25 – Throttle valve monitoring bank 1
2B26 – Throttle valve monitoring bank 2
27A1 – Throttle valve actuator enable line bank 1
27A2 – Throttle valve actuator enable line bank 2
2B57 – Safety concept manager action
CDCD – Throttle valve actuator CAN message
Common failing part numbers:
A2C53142839
A2C53046176
A2C53032056
