Powertrain
generic / SAE
P24A8
EGR Cooler Coolant Pump Performance Stuck Off
The pump is electrically intact but does not deliver flow when commanded - typically a worn impeller or seized rotor.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number4 / A8
Possible causes
- Pump impeller worn or rotor seized high
- Carbon or debris buildup preventing free movement low
- Component wear with age - mechanical play low
Symptoms
- Check engine light on
- Pinging or knocking under load
- Power loss and hesitation
- Possible rough idle
- Failed emissions inspection (NOx)
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 200–800 €
- Estimated time: 1–3 h
- Component: egr cooler coolant pump
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012