OBD-II code · Powertrain (generic, extended)
P26D7 Engine Coolant Pump Clutch Performance/Stuck Off
The coolant pump clutch is commanded on but does not engage. Coolant flow is missing under load, leading to overheating.
Is it safe to drive with P26D7?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyWorn friction surfaces enlarge air gap
- PossibleWeak solenoid magnetic force
- Less likelyCarbon or debris buildup preventing free movement
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
Related codes
- P26D4Engine Coolant Pump Supply Voltage Circuit Low
- P26D5Engine Coolant Pump Supply Voltage Circuit High
- P26D6Engine Coolant Pump Clutch Control Circuit / Open
- P26D8Engine Coolant Pump Clutch Stuck On
- P26D9Engine Coolant Pump Clutch Control Circuit Low
- P26DAEngine Coolant Pump Clutch Control Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.