Powertrain
Definition only
Lights the check engine lamp
P2D26: Coolant Pump E Control Circuit Performance/Stuck Off
Standardized SAE J2012 code · P2Dxx codes
What does P2D26 mean?
Coolant pump E is commanded on but does not respond as expected. Pump motor stuck, relay weld, or driver fault.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Common causes
- High Pump motor mechanically stuck
- Medium Output driver fault
- 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 P2D26 on the same make and model first.
P2D26 in the community
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