P0CAA: The high voltage battery temperature sensor M gives a lower signal than normal
The high voltage battery temperature sensor M gives a lower signal than normal. It is usually the sensor itself, its wiring or a real fault in what it measures.
| Code | P0CAA |
|---|---|
| System | Engine and transmission |
| Group | P0Cxx, Hybrid and electric |
| Type | Generic: it means the same on every make |
How to read and clear P0CAA 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 P0CAA 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
- P0CA6 The high voltage battery charge current is above normal
- P0CA7 The hybrid battery discharge current is too high
- P0CA8 The high voltage battery temperature sensor M has an electrical fault
- P0CA9 The high voltage battery temperature sensor M gives readings outside the normal
- P0CAB The high voltage battery temperature sensor M gives a higher signal than normal
- P0CAC The high voltage battery temperature sensor M fails now and then
- P0CAD The high voltage battery temperature sensor N has an electrical fault
- P0CAE The high voltage battery temperature sensor N gives readings outside the normal
What does code P0CAA mean?
The high voltage battery temperature sensor M gives a lower signal than normal. It is usually the sensor itself, its wiring or a real fault in what it measures.
How do you clear P0CAA?
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, P0CAA 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.
