BMW auxiliary control unit fault codes
The 73 fault codes the auxiliary control unit 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: 7 Series (E65), 7 Series (E66), 7 Series (E67)
- 9308 SEC1: Alarm RGS fresh-air flap, left, stage 1, reducible gases
- 9309 SEC1: Alarm RGS fresh-air flap, left, stage 1, oxidizable gases
- 930A SEC1: Alarm RGS fresh-air flap, left, stage 2, reducible gases
- 930B SEC1: Alarm RGS fresh-air flap, left, stage 2, oxidizable gases
- 930C SEC1: Alarm RGS fresh-air flap, right, stage 1, reducible gases
- 930D SEC1: Alarm RGS fresh-air flap, right, stage 1, oxidizable gases
- 930E SEC1: Alarm RGS fresh-air flap, right, stage 2, reducible gases
- 930F SEC1: Alarm RGS fresh-air flap, right, stage 2, oxidizable gases
- 9310 SEC1: Alarm RGS proximity, engine fan, stage 1, reducible gases
- 9311 SEC1: Alarm RGS proximity, engine fan, stage 1, oxidizable gases
- 9312 SEC1: Alarm RGS proximity, engine fan, stage 2, reducible gases
- 9313 SEC1: Alarm RGS proximity, engine fan, stage 2, oxidizable gases
- 9314 SEC1: Activation, air system
- 9315 SEC1: Activation, safety battery terminal, starter line
- 9316 SEC1: Activation, fire-extinguishing system, manual
- 9317 SEC1: Activation, fire-extinguishing system, engine compartment
- 9318 SEC1: Activation, fire-extinguishing system, bottom right
- 9319 SEC1: Activation, fire-extinguishing system, bottom left
- 931A SEC1: Activation, emergency exit, windshield
- A208 SEC1: Fuse 30BB1 / line break (and 2 other meanings)
- A209 SEC1: Fuse 30SB1 / line break (and 2 other meanings)
- A20A SEC1: Current sensor (and 2 other meanings)
- A20B SEC1: Activation, cut-off relay 86TR (and 2 other meanings)
- A20C SEC1: Irritant-gas sensor, fresh-air flap, left (and 1 other meaning)
- A20D SEC1: Irritant-gas sensor, fresh-air flap, right (and 1 other meaning)
- A20E SEC1: Irritant-gas sensor, near engine fan (and 1 other meaning)
- A20F Cylinder pressure, air supply system (and 1 other meaning)
- A210 SEC1: Button, air system (and 1 other meaning)
- A211 SEC1: Solenoid valve, air system (and 1 other meaning)
- A212 SEC1: Fire sensor, engine compartment (and 1 other meaning)
- A213 SEC1: Fire sensor, bottom left (and 1 other meaning)
- A214 SEC1: Fire sensor, bottom right (and 1 other meaning)
- A215 SEC1: Button, fire-extinguishing system (and 1 other meaning)
- A216 SEC1: Firing pellet, fire-extinguishing bottle 1
- A217 SEC1: Firing pellet, fire-extinguishing bottle 2
- A218 SEC1: Activation, hydraulic pump 86HP
- A219 ZBM: IBS starting battery, communication fault
- A21A ZBM: IBS equipment battery, Communication fault
- A21B SEC1: Limit switch, top, passenger's door
- A21C SEC1: Limit switch, bottom, passenger's door
- A21D SEC1: Limit switch, top, door, rear left
- A21E SEC1: Limit switch, bottom, door, rear left
- A21F SEC1: Limit switch, top, door, rear right
- A220 Transport mode active
- A221 SEC1: Solenoid valves, driver's door (and 1 other meaning)
- A222 SEC1: Solenoid valves, passenger's door (and 1 other meaning)
- A223 SEC1: Solenoid valves, door, rear left (and 1 other meaning)
- A224 SEC1: Solenoid valves, door, rear right (and 1 other meaning)
- A225 Control unit, SEC switch cluster: Failure
- A226 SEC1: Overheating, hydraulic pump (and 1 other meaning)
- A227 SEC1: Transport mode (and 2 other meanings)
- A228 SEC1: Limit switch, bulkhead (and 1 other meaning)
- A229 SEC1: Solenoid valve, emergency, driver's door (and 1 other meaning)
- A22A SEC1: Solenoid valve, emergency, passenger's door
- A22B SEC1: Solenoid valve, emergency, door, rear left (and 1 other meaning)
- A22C SEC1: Solenoid valve, emergency, door, rear right (and 1 other meaning)
- A22D SEC1: Button, window heater (and 1 other meaning)
- A22E SEC1: Windshield, heating field, left (and 1 other meaning)
- A22F SEC1: Windshield, heating field, right (and 1 other meaning)
- A230 SEC1: Side window, heating field, left (and 1 other meaning)
- A231 SEC1: Side window, heating field, right (and 1 other meaning)
- A232 SEC1: Button, locking, front doors (and 1 other meaning)
- A233 SEC1: Emergency exit malfunctioning (and 1 other meaning)
- A234 SEC1: Button A, emergency exit (and 1 other meaning)
- A235 SEC1: Button B, emergency exit (and 1 other meaning)
- A236 SEC1: Firing pellet 1, emergency exit (and 1 other meaning)
- A237 SEC1: Firing pellet 2, emergency exit (and 1 other meaning)
- A238 SEC1: Firing pellet, starter-battery terminal (and 2 other meanings)
- DB44 K-CAN line fault (and 1 other meaning)
- DB47 K-CAN communication fault (and 1 other meaning)
- DB48 Sec-CAN line fault
- DB4B Sec-CAN communication fault
- DB4C LIN_1 Bus error IBS
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