Powertrain
generic / SAE
P214C
SCR NOx Catalyst Outlet Temperature Too High
The temperature sensor at the SCR inlet reports a value above the safe limit. The SCR catalyst loses NH3 storage capacity above ~550 °C and can be permanently damaged.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number1 / 4C
Possible causes
- Sustained over-temperature event high
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: 200–4000 €
- Estimated time: 1.5–8 h
- Component: scr catalyst
- Component: exhaust temperature sensor
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012