P0E81: The auxiliary cooling system coolant temperature sensor A has an electrical
The auxiliary cooling system coolant temperature sensor A has an electrical fault. It may be the part itself, its connector or the wiring.
| Code | P0E81 |
|---|---|
| System | Engine and transmission |
| Group | P0Exx, Hybrid and electric |
| Type | Generic: it means the same on every make |
How to read and clear P0E81 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 P0E81 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
- P0E7C The coolant bypass valve B control gives a lower signal than normal
- P0E7D The coolant bypass valve B control gives a higher signal than normal
- P0E7E The coolant bypass valve B control gives readings outside the normal range
- P0E80 The coolant bypass valve B control has got stuck
- P0E82 The auxiliary cooling system coolant temperature sensor A gives readings
- P0E83 The auxiliary cooling system coolant temperature sensor A gives a lower signal
- P0E84 The auxiliary cooling system coolant temperature sensor A gives a higher signal
- P0E85 The temperature of charger B is above normal
What does code P0E81 mean?
The auxiliary cooling system coolant temperature sensor A has an electrical fault. It may be the part itself, its connector or the wiring.
How do you clear P0E81?
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, P0E81 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.
