Powertrain
Definition only
Lights the check engine lamp
P261F: Coolant Pump A Control Circuit Stuck On
Standardized SAE J2012 code · P26xx — Computer and output circuits
What does P261F mean?
The first coolant pump runs even when no command is active. Driver is stuck on or the wire is shorted to a permanent supply.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Common causes
- High ECU output driver stuck on
- Medium Control wire shorted to a permanent B+ supply
- Low Carbon or debris buildup preventing free movement
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P261F on the same make and model first.
P261F in the community
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