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BMW Fault Code - 129

Check 129 Fault Code

BMW Fault Code: 129

129 - ABS/ASC main relay

System: Dynamic Stability Control

BMW System: ABS-ASC-DSC

Type: Chassis

BMW Fault Code: 129

129 - ABS/ASC main relay

System: Dynamic Stability Control

BMW System: ABS-ASC-DSC

Type: Chassis

BMW Fault Code: 129

129 - ABS main relay

System: Dynamic Stability Control

BMW System: ABS-ASC-DSC

Type: Chassis

CAN Signal SMG 1

Fault Code Table : MS41

The next generation Siemens MS ECUs introduced many of the OBD2 features. This includes Catalytic Converter monitoring and Long / Short term Fueling and Ignition Adaptation. The MS41 was used on the M52 series of engines, MS42 on the M52TU series, and MS43 on the M43 4 Cylinders.

The OBD2 P codes fault protocol was not activated in European markets on this group, as currently it was not required by law.

CAN Signal SMG 1

Fault Code Table : MS42

The next generation Siemens MS ECUs introduced many of the OBD2 features. This includes Catalytic Converter monitoring and Long / Short term Fueling and Ignition Adaptation. The MS41 was used on the M52 series of engines, MS42 on the M52TU series, and MS43 on the M43 4 Cylinders.

The OBD2 P codes fault protocol was not activated in European markets on this group, as currently it was not required by law.

CAN Signal SMG 1

Fault Code Table : MS43

The next generation Siemens MS ECUs introduced many of the OBD2 features. This includes Catalytic Converter monitoring and Long / Short term Fueling and Ignition Adaptation. The MS41 was used on the M52 series of engines, MS42 on the M52TU series, and MS43 on the M43 4 Cylinders.

The OBD2 P codes fault protocol was not activated in European markets on this group, as currently it was not required by law.

Cat Protection Function- Empty Tank or Low Fuel

Fault Code Table : DME MSS52

The MSS52 is an M Power ECU designed to run the E39 M5, the Z8 Roadster, and also the Wiesmann Roadsters. The MSS54 is used on the E46 M3 and on some Z3Ms. The system uses an Electronic Throttle to accurately control Air intake instead of the more common Cable throttles used on earlier vehicles

Cat Protection Function- Empty Tank or Low Fuel

Fault Code Table : DME MSS54

The MSS52 is an M Power ECU designed to run the E39 M5, the Z8 Roadster, and also the Wiesmann Roadsters. The MSS54 is used on the E46 M3 and on some Z3Ms. The system uses an Electronic Throttle to accurately control Air intake instead of the more common Cable throttles used on earlier vehicles

CAN Signal EGS

Fault Code Table : BMS46

The Bosch BMS46 is a Hybrid ECU, created from a joint effort with Siemens, and is used in later M43 engines used in the Z3 and E46 series.

CAN Signal EGS

Fault Code Table : BMS43

The Bosch BMS46 is a Hybrid ECU, created from a joint effort with Siemens, and is used in later M43 engines used in the Z3 and E46 series.

ABS/ASC Main Relay Circuit

Fault Code Table : ABS 1

The first BMW ABS system, This was a 3 channel system, controlling braking to the front wheels,and a single line for both rear wheels. The wheel speed info could be passed via data lines to traction control systems, which could determine if the vehicle speed signal given from the rear driven axle did not match with the front wheel speed signals and request torque reduction intervention from the ASC (Anti Skid Control) throttle body.

DME Connection

Fault Code Table : ABS 2

The updated version of BMW’s ABS system, this was more advanced. Improvements include a 4 channel system for independent rear wheel braking, which allowed a more active ASC system. With individual braking, not only could a torque reduction be requested via the ASC secondary throttle body, but independent wheel braking could be used to control individual wheel slip as part of a stability program.

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