Powertrain
generic / SAE
P24FE
SCR Catalyst Incorrect
The ECM identifies the installed SCR catalyst as the wrong part — NOx conversion efficiency, NH3 storage capacity or coded part-number do not match the expected application. Typical after fitting a non-OEM SCR brick or after a coding error following replacement.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number4 / FE
Possible causes
- Incorrect or non-OEM SCR catalyst installed high
- Coding mismatch after part replacement medium
Symptoms
- Check engine light on
- Failed emissions inspection
- Possibly slightly increased fuel consumption
- Sulfur (rotten egg) smell from exhaust under load
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 500–3500 €
- Estimated time: 1.5–5 h
- Component: scr catalyst
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012