P0EA9: The air conditioning compressor motor voltage sensor B gives readings outside
The air conditioning compressor motor voltage sensor B gives readings outside the normal range. It is usually the sensor itself, its wiring or a real fault in what it measures.
| Code | P0EA9 |
|---|---|
| System | Engine and transmission |
| Group | P0Exx, Hybrid and electric |
| Type | Generic: it means the same on every make |
How to read and clear P0EA9 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 P0EA9 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
- P0EA5 The DC converter B gives readings outside the normal range
- P0EA6 The DC converter B is getting too hot
- P0EA7 The auxiliary cooling system gives readings outside the normal range
- P0EA8 The air conditioning compressor motor voltage sensor B has an electrical fault
- P0EAA The air conditioning compressor motor voltage sensor B gives a higher signal
- P0EAB The air conditioning compressor motor voltage sensor B gives a lower signal
- P0EAC The air conditioning compressor motor voltage sensor B fails now and then
- P0EAD The air conditioning compressor motor current sensor has an electrical fault
What does code P0EA9 mean?
The air conditioning compressor motor voltage sensor B gives readings outside the normal range. It is usually the sensor itself, its wiring or a real fault in what it measures.
How do you clear P0EA9?
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, P0EA9 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.
