P26F9: The coolant pump C control unit is getting too hot
The coolant pump C control unit is getting too hot. It may be poor cooling, very demanding use or the part itself.
| Code | P26F9 |
|---|---|
| System | Engine and transmission |
| Group | P26xx, Auxiliary outputs and cooling |
| Type | Generic: it means the same on every make |
How to read and clear P26F9 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 P26F9 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
- P26F4 The coolant pump C control has a broken or disconnected wire
- P26F5 The coolant pump C control gives a lower signal than normal
- P26F6 The coolant pump C control gives a higher signal than normal
- P26F7 The coolant pump C power supply voltage has an electrical fault
- P26FB The EGR cooler bypass control (bank 1) has got stuck
- P26FC The EGR cooler bypass control (bank 2) has got stuck
- P26FD The internal air conditioning compressor control unit gives readings outside
- P26FE The exhaust flow control valve A control gives readings outside the normal range
What does code P26F9 mean?
The coolant pump C control unit is getting too hot. It may be poor cooling, very demanding use or the part itself.
How do you clear P26F9?
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, P26F9 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.
