P24AAEGR Cooler Coolant Pump Control Circuit High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- With P24AA the controller finds the control line of the EGR cooler coolant pump at a higher voltage than its switching state allows. The classic causes are a short circuit toward battery voltage, for example where the harness rubs against a powered wire, moisture in the connector, or a pump that no longer draws current so the line floats up. On some designs an open circuit can look like a high signal, so P24A7 and P24AA may appear together. Manufacturer limits are not public; the general CARB duty to watch actuator wiring plus supplier background on the cooler support this text. Measuring supply, ground and control voltage with the connector plugged in usually separates a wiring fault from a failed pump.
- What you may notice
- Malfunction indicator lamp on
- Pump may not run when commanded
- Likely causes
- LikelyControl wire shorted to a battery voltage feed
- PossibleWater or corrosion in the pump connector
- PossiblePump electronics failed so no current is drawn
- 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: €30 – €450
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.