P0A8B: The 14 volt power module system voltage has a fault
The 14 volt power module system voltage has a fault. Its supply and connections need checking.
| Code | P0A8B |
|---|---|
| System | Engine and transmission |
| Group | P0Axx, Hybrid and electric |
| Type | Generic: it means the same on every make |
How to read and clear P0A8B 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 P0A8B 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
- P0A87 The current sensor signal in the 14 volt power module is out of range or does
- P0A88 The current sensor signal in the 14 volt power module is electrically too low
- P0A89 The current sensor signal in the 14 volt power module is electrically too high
- P0A8A The current sensor signal in the 14 volt power module cuts out intermittently
- P0A8C The system voltage of the 14 volt power module is unstable
- P0A8D The 14 volt power module system voltage is too low
- P0A8E The 14 volt power module system voltage is too high
- P0A8F The 14 volt power module system is not performing as expected
- P0A0F Engine failed to start
- P0A1F Battery energy control module fault
- P0A7F Hybrid battery pack deterioration
- P0A80 Replace hybrid battery pack
What does code P0A8B mean?
The 14 volt power module system voltage has a fault. Its supply and connections need checking.
How do you clear P0A8B?
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, P0A8B 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.
