Code result
P224D
Alternative Fuel Tank Shutoff Valve A Control Circuit Performance/Stuck Off
High severity
What it means
Alternative-fuel shutoff valve A is electrically OK but does not open when commanded. Vehicle remains on petrol/diesel only.
Is it safe to drive?
No — stop driving
This code points to a problem that can cause damage or affect safety. Avoid driving and have the vehicle diagnosed promptly.
Most likely causes
Valve seized closed
highOne of the most commonly reported causes for this code — check this first.
Carbon or debris buildup preventing free movement
lowLess common, but worth ruling out after the more likely causes.
Component wear with age - mechanical play
lowLess common, but worth ruling out after the more likely causes.
Related help
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