B105A87 — Left rear door handle lost communication
Quick answer
B105A87 means the body controller stopped receiving messages from the left rear door handle. The hidden handle may not present or retract. The handle assembly is the usual part replaced.
What to check first
- Check the 12 V battery state of charge and terminals; a weak 12 V supply causes many electronic faults.
- Check whether other modules on the same network also report communication faults; one module offline can set codes in several others.
- Read all stored fault codes with a scan tool and deal with related codes first.
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 for B105A87
A fault code points to a system, not always to one part. Work through the checks above first. If they point to a part, these are the references usually involved. The right version depends on the build, so it is confirmed against the VIN before anything is quoted.
| Part | OE reference | |
|---|---|---|
| Rear outer door handle assembly - left | 861739511E-PRM | View reference |
Need one of these parts? Send us the fault code, the VIN and a photo of the part or its label. We check the reference against the VIN, then tell you what we can supply, the price and the lead time.
Frequently asked questions
Can I drive an Aiways U5 with B105A87?
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 B105A87 mean?
B105A87 means the body controller stopped receiving messages from the left rear door handle. The hidden handle may not present or retract. The handle assembly is the usual part replaced.
What should be checked first for B105A87?
Check the 12 V battery state of charge and terminals; a weak 12 V supply causes many electronic faults. Check whether other modules on the same network also report communication faults; one module offline can set codes in several others. Read all stored fault codes with a scan tool and deal with related codes first.
Which parts can be involved in B105A87?
Depending on what the checks show: Rear outer door handle assembly - left. A fault code points to a system, not always to one part, so confirm the cause before replacing anything.
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 confirm the reference against the VIN, then tell you availability, price and lead time. We ship from China to workshops and distributors across Europe.