OBD-II code · Powertrain (generic, extended)
P26D6 Engine Coolant Pump Clutch Control Circuit / Open
The mechanical clutch on a belt-driven coolant pump (used to disengage the pump for fast warm-up) cannot be driven. Pump always engaged so warm-up takes longer.
Is it safe to drive with P26D6?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyOpen coil in clutch solenoid
- PossibleBroken control wire
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–3.5 h
- Emissions test
- Usually unaffected
- Parts involved
- Coolant Pump Clutch, Clutch Solenoid, Wiring Harness
Related codes
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.