System reaction to a fault

• Integrity diagnosis is blocked.
• Fuel adaptation and purging blocked on P1452 .

Shut-off valve

• If there is an open circuit or short circuit to ground, diagnostic trouble code P1444  will be generated.
• If there is a short circuit to B+, diagnostic trouble code P1445  will be generated.

• Fuel adaptation and purging are blocked.

Integrity

• A minor leak will generate diagnostic trouble code P0442 .
• A major leak will generate diagnostic trouble code P0455 .