BMW junction box electronics fault codes

The 175 fault codes the junction box electronics can store, and what each one means. Some codes mean different things in different versions of the module; tap a code to see which applies to your car.

On: 5 Series (E60), 5 Series (E61), 6 Series (E63), 6 Series (E64), 7 Series (E65), 7 Series (E66), 7 Series (E67), X5 (E70), X6 (E71), X6 (E72), 1 Series (E81), 1 Series (E82), X1 (E84), 1 Series (E87), 1 Series (E88), Z4 (E89), 3 Series (E90), 3 Series (E91), 3 Series (E92), 3 Series (E93)

  • 9328 ZGM/SGM-ZGM: K-CAN communication fault
  • 9329 ZGM/SGM-ZGM: PT-CAN communication fault
  • 932A ZGM/SGM-ZGM: BYTEFLIGHT communication fault
  • 932B ZGM/SGM-ZGM: BYTEFLIGHT damping too high
  • 932C ZGM/SGM-ZGM: Control-module fault (too much memory required)
  • 932D ZGM/SGM-ZGM: Control-module fault (memory error)
  • 932E ZGM/SGM-ZGM: Control-module fault (exception occurred)
  • 932F PT-Bus WAKE info different
  • 93A8 KGM: Internal fault
  • 93A9 KGM: Terminal 30A connection faulty
  • 93AA KGM: Terminal 30B connection faulty
  • 93AB KGM: Relay sticking, MPM relay on
  • 93AC KGM: Relay sticking, MPM relay off
  • 93AD KGM: Micro-power module, no power supply
  • 93AE Hall sensor driver door defective
  • 93AF Hall sensor passenger door defective
  • 93B0 KGM: Relay, power window, driver's door, faulty
  • 93B1 KGM: Relay, power window, passenger's door, faulty
  • 93B2 KGM: Mirror heating, driver's side, faulty
  • 93B3 KGM: Drive, mirror, driver's side, faulty
  • 93B4 KGM: Drive, pivoting, mirror, driver's side, faulty
  • 93B5 KGM: Mirror heating, passenger's side, faulty
  • 93B6 KGM: Drive, mirror, passenger's side, faulty
  • 93B7 KGM: Drive, pivoting, mirror, passenger's side, faulty
  • 93B8 KGM: Servotronic: Timeout, terminal telegram
  • 93B9 KGM: Servotronic: Terminal 15 invalid
  • 93BA KGM: Servotronic: motor timeout
  • 93BB KGM: Servotronic: Engine status invalid
  • 93BC KGM: Servotronic: DSC telegram timeout
  • 93BD KGM: Servotronic: Road speed invalid
  • 93BE KGM: Servotronic: No terminal 30A
  • 93BF KGM: Servotronic: FDC timeout
  • 93C0 KGM: Servotronic: FDC mode invalid
  • 93C1 KGM: Servotronic: Hardware faulty
  • 93C2 KGM: Switch: Contact faulty
  • 93C3 KGM: Central locking: Short circuit, lead ZV_MER
  • 93C4 KGM: Central locking: Short circuit, lead ZV_MVFRT
  • 93C5 KGM: Central locking: Short circuit, lead ZV_MVR
  • 93C6 KGM: Central locking: Short circuit, lead ZV_MZS
  • 93C7 KGM: Terminal 30, connection faulty
  • 93C8 KGM: Roller-cover controller, fault, motor sensor
  • 93C9 KGM: No LIN communication with door mirror, driver's side
  • 93CA KGM: No LIN communication with door mirror, front passenger's side
  • 93CB KGM: No LIN communication to switch block, driver's door
  • 93CC KGM: No LIN communication to roller-cover controller
  • 93CD KGM: No LIN communication with seat heating, driver's side
  • 93CE KGM: No LIN communication with seat heating, front passenger's side
  • 93CF KGM: Seat heating, driver's side, faulty
  • 93D0 KGM: Seat heating, front passenger's side, faulty
  • 93E7 KGM: Transport mode active
  • 9C5E JBE: Refrigerant pressure sensor
  • 9C69 JBE: Rear-cabin stratification adjuster (and 1 other meaning)
  • A128 JBE: Hardware fault, rain sensor
  • A129 JBE: Rain sensor not calibrated to windshield
  • A12A JBE: Rain/light sensor, overtemperature
  • A12B JBE: Rain/light sensor, overvoltage/undervoltage
  • A12D JBE: Hardware fault, light sensor
  • A12E JBE: Calibration error, light sensor
  • A6C8 JBE: Rear window defroster relay
  • A6C9 JBE: Windshield wipers, blocking (and 1 other meaning)
  • A6CA JBE: Closing relay, windshield wiper (and 2 other meanings)
  • A6CB JBE: Changeover relay, windshield wiper (and 2 other meanings)
  • A6CC JBE: Relay, windshield washer unit (and 1 other meaning)
  • A6CD JBE: Rear window wiper, blocking (and 1 other meaning)
  • A6CE JBE: Relay, rear wiper (and 1 other meaning)
  • A6CF JBE: AUC sensor
  • A6D0 JBE: Control valve in A/C compressor
  • A6D1 AUXILIARY WATER PUMP (and 1 other meaning)
  • A6D2 JBE: Water valve, driver's side (and 1 other meaning)
  • A6D3 JBE: Windshield washer pump
  • A6D4 JBE: Central-locking relay, unlocking
  • A6D5 JBE: Central-locking relay, locking
  • A6D6 JBE: Central-locking relay, double locking
  • A6D7 JBE: Central-locking relay, selective unlocking
  • A6D8 JBE: Power-window relay (closing), passenger's side, rear (and 1 other meaning)
  • A6D9 JBE: Power-window relay (opening), passenger's side, rear (and 1 other meaning)
  • A6DA JBE: Power-window relay (closing), driver's side, rear (and 1 other meaning)
  • A6DB JBE: Power-window relay (opening), driver's side, rear (and 1 other meaning)
  • A6DC JBE: Rear window washer pump (and 1 other meaning)
  • A6DD JBE: Roller sunblind/luggage compartment cover (and 1 other meaning)
  • A6DE JBE: Mirror/washer nozzle heating (and 2 other meanings)
  • A6DF JBE: Glovebox (and 2 other meanings)
  • A6E0 JBE: Seat heating, driver's side
  • A6E1 JBE: Seat heating, passenger's side
  • A6E2 JBE: Relay, Soft Close Automatic, rear lid (and 2 other meanings)
  • A6E3 JBE: E9x: Central-locking drive, rear window; E7x: Central-locking drive, rear lid, top; (and 2 other meanings)
  • A6E4 JBE: Fuel-level sensor, left (and 2 other meanings)
  • A6E5 JBE: Fuel level sensor, right (and 1 other meaning)
  • A6E6 JBE: Power-window switch, passenger's side, front
  • A6E7 JBE: Transport mode active
  • A6E8 CENTRAL LOCKING REPEAT LOCK ACTIVE (and 2 other meanings)
  • A728 JBE: Power-window switch, passenger's side, rear
  • A729 JBE: Power-window switch, driver's side, rear
  • A72A DRIVER REAR WINDOW REGULATOR, HALL SENSOR 1 (and 1 other meaning)
  • A72B DRIVER REAR WINDOW REGULATOR, HALL SENSOR 2 (and 1 other meaning)
  • A72C PASSENGER REAR WINDOW REGULATOR, HALL SENSOR 1 (and 1 other meaning)
  • A72D PASSENGER REAR WINDOW REGULATOR, HALL SENSOR 2 (and 1 other meaning)
  • A72E JBE: Water valve, passenger's side (IHKA High only)
  • A72F JBE: Compressor clutch
  • A730 JBE: Supply, terminal 30g-f (and 1 other meaning)
  • A731 JBE: Supply, terminal 30g-f
  • A732 JBE: Wake-up line
  • A733 JBE: DC/DC converter
  • A734 JBE: ECO valve inactive
  • A735 JBE: E9x: activation, Servotronic valve: activation path 1; E7x: activation, ECO valve: activation path 1
  • A736 JBE: E9x: activation, Servotronic valve: activation path 2; E7x: activation, ECO valve: activation path 2
  • A737 No message (water valve, 0x2BF), receiver JBE, transmitter IHKA
  • A738 JBE: Power supply interrupted
  • A739 JBE: Central-locking drive, rear lid
  • A73A JBE: Central-locking drive, rear window
  • A73B Message (water valve, 0x2BF) error, receiver JBE, transmitter IHKA
  • A73C Message (auxiliary coolant pump, 0x37D) incorrect, receiver JBE, transmitter DME-DDE
  • A73D No message (auxiliary coolant pump, 0x37D), receiver JBE, transmitter DME-DDE
  • A73E DC-DC converter DSC/DXC E84
  • A868 JBE: Relay, windshield heater / line to windshield
  • A869 Message (heated windshield) incorrect, receiver JBE, transmitter IHKA/IHKS/IHS
  • A86A FH_REAR_RELAY
  • A86B SCHALTER_FH_HINTEN
  • A86D JBE: Relay, heated rear window / line to rear window
  • A86E JBE: Undervoltage to terminal 30
  • A86F JBE: Overvoltage to terminal 30
  • A870 No message (heated windshield), receiver JBE, transmitter IHKA/IHKS/IHS
  • A871 JBE: Tilt sensor
  • A872 JBE: Passenger-compartment sensor
  • A873 JBE: Central-locking drive, splitdoor, left
  • A874 JBE: Calibration, fuel tank sensor
  • A875 SRA_RELAIS_NICHT_PLAUSIBEL
  • A876 JBE: Motor, power window, driver's side, rear, open circuit
  • A877 JBE: Motor, power window, passenger's side, rear, open circuit
  • A878 JBE: Microwave sensor, driver's door
  • A879 JBE: Microwave sensor, rear right
  • A87A JBE: Microwave sensor, rear left
  • A87B HECK_WISCHER_SEK_RELAIS
  • A87C JBE: Microwave sensor, passenger's door
  • A87D HEARTBEAT_DEFECTIVE
  • A87E JBE: Ultrasonic sensor, line fault
  • A87F ZV_DRIVE_SHOPPING_FLAP
  • A880 EEPROM_ERROR
  • A881 DRIVER REAR WINDOW REGULATOR, HALL SENSOR DEFECTIVE
  • A882 PASSENGER REAR WINDOW REGULATOR, HALL SENSOR DEFECTIVE
  • A883 DRIVER REAR WINDOW REGULATOR, BUTTON OR WIRING DEFECTIVE
  • A884 PASSENGER REAR WINDOW REGULATOR, BUTTON OR WIRING DEFECTIVE
  • A885 JBE: Soft top, hall effect sensor faulty
  • A886 JBE: Active rear spoiler, end position hall effect sensor faulty
  • A887 JBE: Active rear spoiler, electric motor hall effect sensor faulty
  • A888 DRIVER REAR WINDOW REGULATOR, BUTTON OR WIRING DEFECTIVE
  • A889 PASSENGER REAR WINDOW REGULATOR, BUTTON OR WIRING DEFECTIVE
  • C809 JBE: Power-down command (too many prompters)
  • C904 K_CAN_LOW_LINE (and 2 other meanings)
  • C905 K_CAN_HIGH_LINE (and 2 other meanings)
  • C906 KGM: (Ground shift, too high)
  • C907 JBE: K-CAN communication fault (and 2 other meanings)
  • C908 JBE: K-CAN wire fault (and 1 other meaning)
  • C90B JBE: PT-CAN communication fault (and 1 other meaning)
  • C910 No message, receiver JBE, transmitter IHKA (and 1 other meaning)
  • C911 No message, receiver JBE, transmitter IHKA (and 1 other meaning)
  • C912 No message, receiver JBE, transmitter IHKA (and 1 other meaning)
  • C913 No message, receiver JBE, transmitter IHKA (and 1 other meaning)
  • C914 No message (status, air conditioning, 0x246), receiver JBE, transmitter IHKA/SZL (and 2 other meanings)
  • C915 Message (compressor valve, 0x246) faulty, receiver JBE, transmitter IHKA/DME-DDE (and 1 other meaning)
  • C916 Message (heated rear window, 0x246) faulty, receiver JBE, transmitter IHKA/DME-DDE (and 1 other meaning)
  • C917 Message (auxiliary coolant pump, 0x246) incorrect, receiver JBE, transmitter IHKA
  • C918 No message (wiper operation, 0x2A6), receiver JBE, transmitter FRM/SZL/LWS/IHKA (and 2 other meanings)
  • C919 No message (engine heat flow, 0x1B6), receiver JBE, transmitter DME-DDE
  • C91A Message (water valve, 0x1B6) faulty, receiver JBE, transmitter DME-DDE/IHKA (and 2 other meanings)
  • C91B Message (seat heating, driver's side, 0x1E7) faulty, receiver JBE, transmitter IHKA/EGS (and 1 other meaning)
  • C91C Message (seat heating, front passenger side, 0x1E8) error, receiver JBE, transmitter IHKA
  • C91D Message (compressor clutch, 0x246) error, receiver JBE, transmitter IHKA
  • C91E No message (terminal status, 0x130), receiver JBE, transmitter CAS
  • C91F No message (kilometer reading/range, 0x330), receiver JBE, transmitter KOMBI (and 1 other meaning)
  • C920 Message (speed, 0x1A0) incorrect or missing, receiver JBE, transmitter DSC (and 1 other meaning)
  • C921 No message (torque , 0xAA) or message error, receiver JBE, transmitter DME-DDE (and 1 other meaning)
  • C922 Message (steering angle, 0xC4) incorrect or missing, receiver JBE, transmitter DSC
  • C923 Message (torque, transmission, 0xB5) faulty, receiver JBE, transmitter EGS/HIM/SGM/DKG
  • C924 No message (torque, transmission, 0xB5), receiver JBE, transmitter EGS/HIM/SGM/DKG

Every BMW module's fault codes