Powertrain
generic / SAE
P26D1
Engine Coolant Pump Control Module System Voltage High
The smart coolant pump module reports the system voltage above operating range. Pump output is reduced or disabled to protect the module.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number6 / D1
Possible causes
- Alternator regulator failed to limit output high
- Load dump transient after disconnecting a heavy load low
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 150–1000 €
- Estimated time: 1–3.5 h
- Component: smart coolant pump module
- Component: charging system
- MIL / check engine light
Sources
References
sae:J2012