Powertrain
generic / SAE
P26DA
Engine Coolant Pump Clutch Control Circuit High
Voltage on the coolant pump clutch control line is above the expected window. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number6 / DA
Possible causes
- Control wire shorted to B+ high
- Open clutch coil medium
- Connector pins corroded - high contact resistance low
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
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 120–800 €
- Estimated time: 0.8–3 h
- Component: coolant pump clutch
- Component: clutch solenoid
- Component: wiring harness
- MIL / check engine light
Sources
References
sae:J2012