B102012 — Horn short to power
Quick answer
B102012 indicates a short circuit in the horn circuit, so the horn may sound continuously or not work at all.
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
- Horn does not sound
- Horn sounds weak or single-tone
- B102012 stored in the BCM
- Horn fuse blowing
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 B102012
Confirm the reference against your VIN before ordering — the same fault can sit in different hardware depending on the build.
| Part | Aiways OE ref. | |
|---|---|---|
| Low-tone horn | 861984301B | Find part |
Frequently asked questions
Can I drive an Aiways U5 with B102012?
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 B102012 mean?
B102012 indicates a short circuit in the horn circuit, so the horn may sound continuously or not work at all.
What should be checked first for B102012?
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 B102012?
Low-tone horn.
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.