P2DFBCoolant Pump E Control Module Overtemperature
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- Electric coolant pumps carry their own driver electronics, and P2DFB reports that those of coolant pump E have run too hot. Which loop pump E serves differs between makers. No manufacturer documents P2DFB publicly, but its siblings show the pattern: Ford's 2024 gasoline summary lists over temperature as fault type 98 of its auxiliary pumps A and B, watched continuously from 11 V with a 5 second monitoring time, and Ford's 2019 hybrid summary lets the engine coolant pump send its module temperature over LIN, setting P26D2 above 130 °C for 5 seconds. Because the liquid it moves also cools the electronics, low level, trapped air, a stiff impeller or heat from nearby exhaust parts are the usual triggers. The pump then slows or stops, and the served loop may overheat.
- What you may notice
- Warning lamp or message about the cooling system
- Reduced cabin heating or cooling of the component served by pump E
- Pump runs at reduced speed or stops for a while, often together with air or stall codes
- Likely causes
- LikelyCoolant level too low or air trapped in the pump, so the electronics lose their cooling
- PossibleImpeller or bearing running stiff, motor draws high current and heats up
- PossibleDriver electronics inside pump E faulty or reporting temperature wrongly
- RareHeat shield missing or pump too close to hot exhaust or turbo parts
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €80 – €700
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.