Powertrain
Definition only
Lights the check engine lamp
P2DF8: Coolant Pump E Underspeed
Standardized SAE J2012 code · P2Dxx codes
What does P2DF8 mean?
Coolant pump E reports a underspeed condition. Coolant circulation through the affected loop cannot be commanded reliably.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Common causes
- High Pump motor or driver fault
- Medium Wiring or connector fault
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P2DF8 on the same make and model first.
P2DF8 in the community
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