System reaction to a fault

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

Close 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 very minor leak will generate DTC P0456.
• A minor leak will generate DTC P0442.
• A major leak will generate DTC P0455.