P26D7Engine Coolant Pump Clutch Performance/Stuck Off
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- P26D7 is the serious case for a clutched coolant pump: the module has asked the clutch to couple the pump, but the cooling system shows no sign of circulation, so the pump is assumed to stay disconnected. The electrical side may be intact; worn friction faces, a seized armature or a pump that slips under load are typical mechanical reasons. No manufacturer documents P26D7 in public. A comparable failure is documented by Jaguar Land Rover bulletin JLRTB02030NAS1 for its switchable pump on Ingenium 2.0 L petrol engines, though under the general pump code P26CB: when the inner shroud did not move as commanded, the PCM ran the fans at full speed to protect the engine. Without coolant flow the cylinder head heats up locally, so the temperature gauge must be watched and the car should not be driven hard.
- What you may notice
- Check engine light on
- Coolant temperature rises quickly, possible overheating warning
- Radiator fans run at high speed
- Reduced engine power to protect the engine
- Likely causes
- LikelyWorn or slipping clutch friction surfaces
- PossibleArmature or switching mechanism seized in the disengaged position
- RareSlipping or damaged pump drive belt
- RareImplausible coolant temperature input or outdated engine software
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €250 – €1,300
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.