P0EC4: The air conditioning refrigerant temperature sensor B gives readings outside
The air conditioning refrigerant temperature 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 | P0EC4 |
|---|---|
| System | Engine and transmission |
| Group | P0Exx, Hybrid and electric |
| Type | Generic: it means the same on every make |
How to read and clear P0EC4 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 P0EC4 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
- P0EC0 The air conditioning compressor motor phase W current sensor has an electrical
- P0EC1 The air conditioning refrigerant temperature sensor B has an electrical fault
- P0EC2 The air conditioning refrigerant temperature sensor B gives a higher signal
- P0EC3 The air conditioning refrigerant temperature sensor B gives a lower signal than
- P0EC5 The air conditioning compressor motor speed sensor gives readings outside the
- P0EC6 The air conditioning power supply relay control has a broken or disconnected
- P0EC7 The air conditioning power supply relay control gives a lower signal than normal
- P0EC8 The air conditioning power supply relay control gives a higher signal than
What does code P0EC4 mean?
The air conditioning refrigerant temperature 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 P0EC4?
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, P0EC4 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.
