P2D07Motor Electronics Coolant Pump B Underspeed
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P2D07 is the underspeed report for the second motor electronics pump: B is moving, so it is not stalled as in P2D05, yet its actual speed stays well short of the request for too long. Friction in a worn bearing, a partly obstructed impeller, a pump motor that has lost strength or a supply that drops when the pump draws current are the usual chain of suspects. No manufacturer publicly documents P2D07. The closest published logic is Ford's: its 2024 summary keeps under-speed (B2) as a distinct fault type for auxiliary pumps, checked continuously above 11 V for 5 s, and its 2020 hybrids store the pump A version, P2D02. CARB wants the electronic outputs that cool the inverter checked for function. Measure supply and ground under load before replacing the pump. Temperatures climb and power may be capped.
- What you may notice
- Warning lamp on
- Pump B speed in live data clearly below the target value
- Power limitation during long climbs or towing
- Likely causes
- PossibleWorn bearing or friction inside pump B
- PossibleImpeller partly obstructed by deposits or debris
- PossibleHigh resistance in feed or ground causing the voltage to sag under load
- RarePump motor or its electronics losing performance with age
- 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: €60 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.