BMW Description of Control Unit Errors MS40/41

1, 2, 3, 5, 6

Malfunctions in one of the engine cylinders. A detailed diagnosis of all components of the vehicle ignition system is required.

8

Malfunction in the switching device of the car parking system

9

Air conditioning compressor malfunctioning or intermittent

10

Climate control pressure sensor malfunctioning or malfunctioning

12

No signal from vehicle speed sensor

14

Error communicating with EGSDME modules

fifteen

EWS system malfunction

27

Idle Speed Sensor Malfunction

52

Faulty fuel pump or lack of signal from the device. It is necessary to check the operation of the mechanism, to verify the integrity of the wiring and safety elements, as well as the relay.

53

Oxygen Controller Heating Element

62

The ignition signal resistor is out of order or the microprocessor does not receive a signal from the device

68

The airflow controller is malfunctioning or malfunctioning. It is possible that the signal does not reach the control unit from the device due to a wiring malfunction. If the sensor is clogged, it must be cleaned using a special tool.

75

Incorrect voltage recorded on the control and supply line of heating elements of oxygen regulators

81

The coolant temperature sensor is malfunctioning or malfunctioning

84

Camshaft controller malfunctioning or malfunctioning

85

The intake air temperature controller is out of order or is sending incorrect signals to the microprocessor. In the latter case, wiring and contact diagnostics are required.

97

Tank vent valve defective

98

Idle speed sensor defective or damaged wiring

100

General control unit internal fault code. It is necessary to check the wiring and connection quality of the device. The cause of the problem may be failures associated with the functioning of the software component of the microprocessor.

204

Malfunction of a resistor element of the ignition system

206

Mechanical malfunction of the Vanos intake valve system

207

The microprocessor module does not receive a vehicle speed signal

1, 2, 3

Malfunction of one of the ignition coils installed in the engine cylinders

8

Air mass meter defective or clogged

10

The antifreeze temperature controller is out of order or its contact with the power supply is of poor quality

eleven

The fuel pressure regulator in the gas tank of the car is out of order, the problem is the operation of the evaporator system

14

Malfunctioning inlet air temperature controllers

16

Air conditioning compressor device malfunction

19

Malfunction of the intake valve activation system

22, 23, 24

Malfunction of the third, sixth or fourth engine nozzle. The problem should be sought in the elements of the ignition system.

26

No signal from the engine control unit. It is necessary to check the wiring and contacts, the quality of the connection of the device to the electrical network of the machine.

29, 30, 31

Malfunctions associated with the functioning of the ignition coils installed in the first, third or fifth cylinders

35

Air Intake Relay Malfunction

38

Failure in the operation of the clutch switch, the device receives an incorrect signal

41

Incorrect signal from intake air controller

42

Malfunction of the multifunction switch mounted on the steering wheel

43

Failure of one of the buttons installed on the multifunction steering wheel. It is possible to disconnect the contact from the control.

49

Incorrect torque data supplied to the control module

55

Failure of the heating element of the lambda probe installed in the second bank

62

Malfunction of the switching valve of the intake air system

64

Data coming to the control unit from the temperature controller

68

Tank drain valve malfunction

69

The fuel pump relay is out of order or there is no signal from the device to the microprocessor module. A detailed contact check is required. If there are power surges in the vehicle’s on-board network, this problem may cause the contacts on the legs of the device to burn.

71

DME control module internal malfunction

72

There is also a problem with the operation of the DME control unit. The problem may be programmatic in nature.

79

Faulty heating element of the oxygen controller installed in the first engine bank

82

Malfunctions in the functioning of the starter solenoid

84

Pre-Vanos valve malfunction

1

ABS malfunction

3

Error setting ignition timing

4, 5, 6, 7

Malfunction of one of the speed controllers or anti-lock system intake valves

14

Malfunctioning or missing valve relay communication signal

fifteen

Malfunctions recorded in the operation of the pumping system

17, 18

Malfunctions of the front ABS sensors mounted on the left wheel of the car. The cause of the problem may be a lack of contact or damage to the wiring.

22

The signal from one of the speed controllers does not correspond to the normalized parameters and values

25

Malfunction in the operation of the stop lamp switches

27

The idle speed pulse does not reach the engine control unit

30, 31, 32, 34

Failure of one of the sensors mounted on the wheels of the car

35

Incorrect signal or lack of impulse coming to the control unit about brake fluid level

39

Electrical error in servomotors

40

Gas valve potentiometer error. Requires verification of devices, as well as their wiring.

61

Central locking system malfunction

63

General malfunction code in the operation of the processor control unit of the ABS system

65

Faulty rear right sensor or lack of communication signal from the device

67

ABS general error

75

Indicator of a malfunction of the brake system is defective or a bad signal with a lamp

92

Fault or incorrect indicator coming from the pump pressure controller

103

The brake light switch is malfunctioning or malfunctioning. Contact verification and wiring dialer required.

104

Turn angle controller malfunction

106

Malfunction or failure of the lateral acceleration controller

113

Malfunction of the return pump of the anti-lock brake system

115

ABS Control Unit Internal Error

151

ABS control unit coding error

183, 184

Internal malfunction or shift of the controller of an angle of rotation of the car

5df5

On BMW 318TI and other versions, this code indicates an internal malfunction in the control module of the anti-lock brake system

5E1F

Malfunctions in the anti-lock system and lack of communication between the ABS EBV and DSC modules. With such a problem, the transmission unit of the car can go into emergency operation mode. It is noted that the DSC system is active, but the brake adjustment does not work. The brake fluid level is normal, and the pressure in the system is not recognized.

5E19

Lack of communication on the CAN bus between the control unit and the control module of the anti-lock brake system. It is necessary to check the wiring and the controller itself for the absence of software malfunctions.

5E24

Malfunction of the revolution controller located on one of forward wheels. The cause of the problem may be a malfunction associated with the pressure controller in the anti-lock system. It is necessary to test the sensor and its connection.

5F1A

A message about the power limit of the power unit associated with a malfunction of the anti-lock braking system. The problem may be a malfunction in the steering angle controller or overheating of the brake. In both cases, it is necessary to test the sensors mounted on the steering column or brake pedal.

8D

ATS Communication Signal Failure

149

Communication error on the CAN bus between the anti-lock braking system modules and the DSC unit

6031

Emergency unlock recognized. First of all, the user needs to diagnose the powertrain control unit.

28CE00

Malfunction associated with the operation of the glow plug control module. There is no signal from the device to the microprocessor module via the LIN bus.

CC ID

Warning to the car owner about the discharge of the battery and possible disconnection of some electronic equipment. It is necessary to check the battery operation and make sure that the generator set is functioning properly.

A558

Unknown error in the operation of the CAN interface. The problem may be a poor contact of the bus or power surges in the vehicle electrical network.

A0B5

CAS bus communication error. The cause of the problem is that the microprocessor module does not receive a signal about the speed of movement. If the error is inconsistent, it may be due to a poor-quality signal or deterioration of insulation on the controller connection wire.

A3C1

Malfunction of the FRM - footwell module. The problem is the lack of communication with the engine control unit. With such an error, it is necessary first of all to check all the safety elements and the unit with the relay, perhaps the problem is a bad contact or short circuit.

CD9304

The microprocessor module detected a communication failure between the control unit and the BS bus. A detailed check of all components of the digital interface and the quality of the computer connection is required.

CED4

Malfunction of the fuel pump module. If the device fails, engine start will not be possible.

CF17

Lack of communication with the powertrain control unit - no signals are sent from the device to the EGS module. It is necessary to test the operation of the wiring and the quality of the contacts.

2DCA

Communication error with the EGS control module. Check all wires and connectors connected to the engine control unit.

2E7C

The literal interpretation of this error is “serial binary code data transmission interface”. Most likely, the problem is the failure or absence of a signal from the DME module. It is necessary to check the quality of the connection and make sure that there are no breaks in the power line. The problem may be shorting the contact elements.

27A4

Malfunction of the digital EWS interface connected to the DME unit

281D

Disruption of communication with the BSD-generator. The signal coming from the device does not correspond to the normalized parameters.

299B

No signal or incorrect pulse coming from the battery sensor. Malfunction of the IBS controller, the device is located on the negative terminal of the battery. The problem may be poor communication between the device and the dashboard.

4A63

Malfunction of the central lock, verification of the control module of the device is required

4A74

Malfunctions of the preheating system. It is reported that there is no communication with the control module for heating glow plugs.

49A6

Lin-Bus bus malfunctioning. A detailed check of the wiring between the control modules is required. If the cables are intact, look for the cause in the battery.

51AE

Lack of communication with the brake light switch or rear optics does not work.

Possible causes of the problem:

1. Failure of one of the safety devices or relays. The user needs to test all the elements located in the mounting module under the hood or in the passenger compartment.
2. Poor contact with the sensor mounted on the brake pedal. It is necessary to check the device and the quality of its connection. The cause of the problem often lies in clogged contacts on the switch.
3. Damage to the wire connected to the rear optics. It is necessary to test the cable, run it with a multimeter.
4. Failure of a light source installed in an optical device.

5F1D

The data of the control module are not transmitted via the CAN bus. It is necessary to check the integrity of the contacts on the interface and make sure that the wires are not damaged.

5F62

Malfunction of the digital interface system connected to the steering column control unit. Data on the operation of the system does not enter the microprocessor module. The cause of the problem must be sought in the wiring or poor-quality contact.

42DE

Communication failure with the BSD control module - glow plugs. If the unit itself is faulty, this will lead to an incorrect start of the engine, in some cases its start will be impossible.

41ED

Internal malfunction in the DDE module, the problem should be sought in cyclic authentication

51AC

Lack of communication on the CAN bus. The problem must be sought in the wiring or operation of the engine control unit. The reason may be poor contact or disconnection of the connector from the control module by the motor.

51A7

The signal from the control module by the power unit is not received via the digital CAN interface. Checking all pads and contacts on the control unit is required.

55C3

Literally, this error translates as "emergency running adjustment is disabled, the moment from the DSC is not set." The user needs to perform a diagnosis of the health of the switching center located in the steering column. A possible cause may be a malfunction in the steering angle sensor.

55c4

Lack of communication with the CAN interface. The problem is damage to the wiring or poor-quality contact with the vehicle’s power supply. Power surges are possible that lead to communication failures.

601D

No signal with vehicle parking brake

600E

Internal malfunction in the power unit control unit

6dec

On BMW E 38 and other versions, this code indicates a malfunction in the transmission of current data. It is necessary to check the operation of the control unit, as well as the communication buses.

9CC1

Lack of communication with between the rear-view mirror on the driver’s side and the control unit. Perhaps the regulator located on the center console is faulty. Since the error is electrical, the Check icons may not appear on the tidy. It is necessary to check the wiring to the rear view mirror position adjuster.

9E33

Malfunction in the work of the parking system, malfunctions recorded in the work of the left rear parking sensor. The cause may be a wire break or poor contact of the device.

9CC5

No signal with LIN interface. The user needs to test the integrity of the wiring and the quality of contact of the bus with the on-board network.

93BA

Malfunctions in the passive safety system. In case of such an error, it is recommended to check the connection between the engine control unit and the airbag control unit. A corresponding trouble icon appears on the dashboard of the vehicle.

The following problems could also lead to this error:

• damage to the wiring connected to the sensors;
• malfunction of pretensioners or their power lines;
• damage to the contacts on the power connector of the passive safety control unit;
• malfunction of squibs.

93FC

On BMW F20 and other versions, this code indicates a battery malfunction or poor connection with the device. The error indicates a positive battery cable, you need to check its contact and eliminate oxidation from the terminal clamp.

P0600

CAN data bus malfunction