Powertrain
generic / SAE
P2604
Coolant Pump Control Circuit High
The electric coolant pump drive line reads above the upper threshold — usually a short to positive or a stuck-on driver stage.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number6 / 04
Possible causes
- Drive line shorted to positive high
- Driver stage shorted on medium
- Connector pins corroded - high contact resistance low
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 120–700 €
- Estimated time: 0.5–2.5 h
- Component: electric coolant pump
- Component: coolant pump wiring
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012