P0E84: The auxiliary cooling system coolant temperature sensor A gives a higher signal
The auxiliary cooling system coolant temperature sensor A gives a higher signal than normal. It is usually the sensor itself, its wiring or a real fault in what it measures.
| Code | P0E84 |
|---|---|
| System | Engine and transmission |
| Group | P0Exx, Hybrid and electric |
| Type | Generic: it means the same on every make |
How to read and clear P0E84 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 P0E84 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
- P0E80 The coolant bypass valve B control has got stuck
- P0E81 The auxiliary cooling system coolant temperature sensor A has an electrical
- P0E82 The auxiliary cooling system coolant temperature sensor A gives readings
- P0E83 The auxiliary cooling system coolant temperature sensor A gives a lower signal
- P0E85 The temperature of charger B is above normal
- P0E86 The battery B charger input voltage is below normal
- P0E87 The battery B charger input voltage is above normal
- P0E88 The battery B charger input current is below normal
What does code P0E84 mean?
The auxiliary cooling system coolant temperature sensor A gives a higher signal than normal. It is usually the sensor itself, its wiring or a real fault in what it measures.
How do you clear P0E84?
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, P0E84 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.
