P0CA4: The high voltage battery charge voltage is above normal
The high voltage battery charge voltage is above normal. It is usually the on-board charger, the charging point or the cable.
| Code | P0CA4 |
|---|---|
| System | Engine and transmission |
| Group | P0Cxx, Hybrid and electric |
| Type | Generic: it means the same on every make |
How to read and clear P0CA4 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 P0CA4 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
- P0CA0 The circuit of current sensor B in the 14 volt power module has an intermittent
- P0CA1 The drive motor control unit has requested the engine warning lamp to illuminate
- P0CA2 The DC converter step lowering voltage gives readings outside the normal range
- P0CA3 The DC converter step raising voltage gives readings outside the normal range
- P0CA5 The hybrid battery discharge voltage is too high
- 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
What does code P0CA4 mean?
The high voltage battery charge voltage is above normal. It is usually the on-board charger, the charging point or the cable.
How do you clear P0CA4?
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, P0CA4 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.
