P26D2Engine Coolant Pump Control Module Over Temperature
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- The electronics of a smart coolant pump also measure their own temperature. P26D2 is set when this value climbs too high: in Ford's hybrid OBD summaries the pump module reports the temperature over LIN and the PCM stores P26D2 once it passes 130 °C for five seconds. The electronics are cooled by the coolant flowing through the pump, so overheating usually means poor flow – a low coolant level, trapped air, a partly blocked impeller drawing excessive current, or very hot under-bonnet conditions. Ford also uses the over-temperature state as a reason to suspend its pump communication check. The code differs from P0217, which concerns the engine coolant itself. The pump may reduce power or shut down to protect itself, so engine temperature can rise quickly.
- What you may notice
- Check engine lamp on
- Engine temperature rising or temperature warning
- Reduced heater output
- Likely causes
- LikelyLow coolant level or air around the pump reducing cooling of its electronics
- PossibleStiff impeller or bearing making the motor draw high current
- RareInternal fault in the pump electronics or temperature sensor
- 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: €20 – €1,200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.