P26AA: The maximum engine coolant bypass valve A position sensor stop gives readings
The maximum engine coolant bypass valve A position sensor stop gives readings outside the normal range. It is usually the sensor itself, its wiring or a real fault in what it measures.
| Code | P26AA |
|---|---|
| System | Engine and transmission |
| Group | P26xx, Auxiliary outputs and cooling |
| Type | Generic: it means the same on every make |
How to read and clear P26AA 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 P26AA 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
- P26A5 The engine coolant bypass valve A position sensor gives readings outside the
- P26A6 The engine coolant bypass valve A position sensor gives a lower signal than
- P26A7 The engine coolant bypass valve A position sensor gives a higher signal than
- P26A8 The engine coolant bypass valve A position sensor fails now and then
- P26AC The engine coolant bypass valve B control has a broken or disconnected wire
- P26AD The engine coolant bypass valve B control gives a lower signal than normal
- P26AE The engine coolant bypass valve B control gives a higher signal than normal
- P26B0 The engine coolant bypass valve B gives readings outside the normal range
What does code P26AA mean?
The maximum engine coolant bypass valve A position sensor stop 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 P26AA?
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, P26AA 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.
