BMW trunk module fault codes
The 29 fault codes the trunk module 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)
- A2A8 Reset by watchdog
- A2A9 HKL: Control module fault (and 1 other meaning)
- A2AA Reset due to clock monitor (and 1 other meaning)
- A2AB HKL: Coding (and 1 other meaning)
- A2AC HKL: Physical button: fault or short circuit to positive
- A2AD HKL: Activate relay sticker OPEN (and 1 other meaning)
- A2AE HKL: Deactivate relay sticker OPEN
- A2AF HKL: Activate relay sticker CLOSED (and 1 other meaning)
- A2B0 HKL: Deactivate relay sticker CLOSED (and 1 other meaning)
- A2B1 HKL: Electronics, pump (and 1 other meaning)
- A2B2 HKL: Electronics, valve activation (and 1 other meaning)
- A2B3 HKL: Angle-of-rotation sensor (and 1 other meaning)
- A2B4 HKL: Button, tailgate, inside (and 1 other meaning)
- A2B5 HKL: Button, tailgate (and 1 other meaning)
- A2B6 HKL: Rear-lid-lift motor, right: open circuit
- A2B7 HKL: Hall sensor 1, left: short circuit to negative or open circuit
- A2B8 HKL: Hall sensor 1, left: short circuit to positive
- A2B9 HKL: Hall sensor 2, left: short circuit to negative or open circuit
- A2BA HKL: Hall sensor 2, left: short circuit to positive
- A2BB HKL: Hall sensor 1, right: short circuit to negative or open circuit
- A2BC HKL: Hall sensor 1, right: short circuit to positive
- A2BD HKL: Hall sensor 2, right: short circuit to negative or open circuit
- A2BE HKL: Hall sensor 2, right: short circuit to positive
- A2C5 HKL: Rear-lid-lift button, internal lighting: short circuit to negative
- A2C6 HKL: Rear-lid-lift button, internal lighting: short circuit to positive
- A2C7 HKL: Rear-lid-lift button, internal lighting: open circuit
- E3C4 HKL: K-CAN communication fault (and 1 other meaning)
- E3C5 HKL: K-CAN line fault
- E3C7 Bus Communication Fault
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