Powertrain
generic / SAE
P24DE
Reductant Purge Control Valve B Circuit High
Same as P24DB with the control line shorted to supply. The evaporative system captures fuel vapor from the tank and purges it into intake; leaks or stuck purge valves leak hydrocarbons and cause emissions failures.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number4 / DE
Possible causes
- Control line shorted to supply high
- Connector pins corroded - high contact resistance low
- Supply wire pinched against B+ source low
Symptoms
- Check engine light or NOx warning on
- AdBlue/DEF level or quality warning
- Possible no-start countdown after ignore period
- Failed emissions inspection (NOx)
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 120–500 €
- Estimated time: 0.6–2 h
- Component: reductant purge valve b
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012