P2DF5Coolant Pump E Control Circuit Low
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P2DF5 means the command line of coolant pump E sits too low, typically shorted to ground, so the module's driver cannot pull it up to the commanded level. No manufacturer documents this code publicly. In Ford's 2024 gasoline OBD summary the matching fault type is 11 (circuit low), again flagged by the smart driver for pumps A and B, continuously above 11 V. Because a PWM pump reads duty cycle, a line held at ground can mean zero duty; depending on the pump design this is read as stop, as maximum speed or as a fault state. CARB requires output components to be checked for shorts as well as for proper response. Look for chafed insulation against body or engine parts and water in the connector. The open circuit is P2DF4, a short to voltage P2DF6, the pump power feed P2DFA.
- What you may notice
- Warning lamp on
- Pump stopped or stuck at one speed
- Rising temperature of the component served by pump E
- Likely causes
- LikelyCommand wire chafed through and shorted to ground
- PossibleMoisture or corrosion bridging the command pin to ground
- PossibleInternal short in the pump's control input
- RareOutput stage of the commanding module defective
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €20 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.