P2D03Motor Electronics Coolant Pump A Supply Voltage Circuit
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P2D03 concerns the power feed of motor electronics coolant pump A rather than its command line: the pump, or the module reading its status, finds the supply outside its allowed window or missing. That points to a blown fuse, a corroded connector, a weak ground or a 12 V system that drops too low. The command-side faults of the same pump are P0A05 to P0A07; Ford's 2019 hybrid summary checks those with 6 to 19 V on the 12 V net. Ford lists P2D03 in the 2020 hybrid bulletins 20-2221 (Escape HEV) and 20-2293/20-2345 (Explorer, Aviator, Police Interceptor Utility hybrid), where reprogramming after a coolant check cleared it. In the 2024 summary the matching pump fault type is 1C, supply voltage out of range. A pump without proper power stops cooling the inverter.
- What you may notice
- Malfunction indicator lamp on
- Pump A runs intermittently or not at all
- Further low-voltage codes in other modules
- Likely causes
- LikelyCorroded connector, loose terminal or poor ground at pump A
- PossibleBlown fuse or faulty relay in the pump feed
- PossibleWeak 12 V battery or DC/DC converter output too low
- RareSoftware strategy on 2020 Ford hybrids, cured by reprogramming
- 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.