P0A9B: The hybrid battery temperature sensor A has an electrical fault
The hybrid battery temperature sensor A has an electrical fault. It may be the part itself, its connector or the wiring.
| Code | P0A9B |
|---|---|
| System | Engine and transmission |
| Group | P0Axx, Hybrid and electric |
| Type | Generic: it means the same on every make |
How to read and clear P0A9B with Final OBD
Plug an OBD2 scanner in under the steering wheel, switch the ignition on and open Final OBD. Under Faults you’ll see P0A9B with its description and whether it’s confirmed, pending or permanent.
If the engine stores it over standard OBD, with FREE you read this code with its explanation for nothing and clear it. With PRO you also read the faults of every control unit and clear them in all of them.
Clearing the code only turns the light off: if the cause is still there, it comes back. Clear it once it’s fixed, and not right before an inspection. It’s all in how to read and clear fault codes and in inspections and OBD.
Similar codes
- P0A97 The high voltage battery cooling fan 2 has got stuck
- P0A98 The high voltage battery cooling fan 2 has got stuck
- P0A99 The high voltage battery cooling fan 2 control gives a lower signal than normal
- P0A9A The high voltage battery cooling fan 2 control gives a higher signal than normal
- P0A9C The hybrid battery temperature sensor A gives readings outside the normal range
- P0A9D The hybrid battery temperature sensor A gives a lower signal than normal
- P0A9E The hybrid battery temperature sensor A gives a higher signal than normal
- P0A9F The hybrid battery temperature sensor A fails now and then
- P0A0F Engine failed to start
- P0A1F Battery energy control module fault
- P0A7F Hybrid battery pack deterioration
- P0A80 Replace hybrid battery pack
What does code P0A9B mean?
The hybrid battery temperature sensor A has an electrical fault. It may be the part itself, its connector or the wiring.
How do you clear P0A9B?
With an OBD2 scanner and an app like Final OBD, which clears it for free if it’s stored by the engine control unit. But clearing it only turns the light off: if the cause isn’t fixed, P0A9B comes back.
Read it on your car
Final OBD reads and clears engine faults through standard OBD for free, each one explained in plain English. With PRO it also reads the faults of every control unit, each make’s own codes included, and clears them in all of them.
