P118C86 — Battery temperature signal invalid
Quick answer
P118C86 indicates that the battery management system is receiving invalid temperature signals from the cell monitoring units inside the pack. The pack is no longer fully monitored, so charging and power can be limited.
What to check first
- Read all stored fault codes with a scan tool and deal with related codes first.
- High-voltage system: do not open or disconnect high-voltage components. Refer the car to a technician qualified for high-voltage work.
Can I still drive?
Have it inspected before further driving. 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 P118C86
Confirm the reference against your VIN before ordering — the same fault can sit in different hardware depending on the build.
| Part | Aiways OE ref. | |
|---|---|---|
| Temperature sensor / module | — | Find part |
| BMS harness / connectors | — | Find part |
| BMS controller | — | Find part |
| Traction battery assembly | — | Find part |
Frequently asked questions
Can I drive an Aiways U5 with P118C86?
Have it inspected before further driving. 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 P118C86 mean?
P118C86 indicates that the battery management system is receiving invalid temperature signals from the cell monitoring units inside the pack. The pack is no longer fully monitored, so charging and power can be limited.
What should be checked first for P118C86?
Read all stored fault codes with a scan tool and deal with related codes first. High-voltage system: do not open or disconnect high-voltage components. Refer the car to a technician qualified for high-voltage work.
Which parts are involved in P118C86?
Temperature sensor / module, BMS harness / connectors, BMS controller, Traction battery assembly.
Other Battery Management System (BMS) codes for the Aiways U5
P11011DShunt current out of rangeP111892Cell temperature too highP112413Pack voltage lostP11241Ainsulation monitoring level 1 (DC charging)P11251Ainsulation monitoring level 2 (DC charging)P11261Ainsulation monitoring level 1 (low-voltage condition)P11271Ainsulation monitoring level 2 (low-voltage condition)P115272Precharge relay will not close
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.