B100911 — Reverse light short to ground
Quick answer
B100911 indicates a short circuit in the reverse light circuit that the body control module switches, so the reverse light may not work.
What to check first
- Read all stored fault codes with a scan tool and deal with related codes first.
- Check the 12 V battery state of charge and terminals; a weak 12 V supply causes many electronic faults.
- Inspect the fuses that protect this circuit.
Symptoms you may notice
- Reversing lamps do not come on
- One reverse lamp stays off
- B100911 stored in the BCM
- Blown reverse lamp bulb
Can I still drive?
Usually drivable — have it checked soon. If in doubt, park the car and ask a technician — a fault that limits power or shuts the high-voltage system down will not clear by itself.
Parts that fix B100911
Confirm the reference against your VIN before ordering — the same fault can sit in different hardware depending on the build.
| Part | Aiways OE ref. | |
|---|---|---|
| Reverse lamp bulb | 861963114 | Find part |
Frequently asked questions
Can I drive an Aiways U5 with B100911?
Usually drivable — have it checked soon. If in doubt, park the car and ask a technician — a fault that limits power or shuts the high-voltage system down will not clear by itself.
What does B100911 mean?
B100911 indicates a short circuit in the reverse light circuit that the body control module switches, so the reverse light may not work.
What should be checked first for B100911?
Read all stored fault codes with a scan tool and deal with related codes first. Check the 12 V battery state of charge and terminals; a weak 12 V supply causes many electronic faults. Inspect the fuses that protect this circuit.
Which parts are involved in B100911?
Reverse lamp bulb.
Other Body Control Module (BCM) codes for the Aiways U5
Need the part or a second opinion?
Send the fault code and your VIN — we will confirm the reference, availability and price, and ship from China to workshops and distributors across Europe.