P224D
Alternative Fuel Tank Shutoff Valve A Control Circuit Performance/Stuck Off
Alternative-fuel shutoff valve A is electrically OK but does not open when commanded. Vehicle remains on petrol/diesel only.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: hard
Common causes
Ordered by how often each turns out to be the cause.
- Valve seized closedCommon
- Carbon or debris buildup preventing free movementLess likely
- Component wear with age - mechanical playLess likely
Parts involved
- Alternative Fuel Shutoff Valve
P224D is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.