P2665
Fuel Shutoff Valve B Control Circuit / Open
The controller cannot drive the secondary fuel shutoff valve. Engine cannot be commanded off through this path during a safety event.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Open coil in shutoff valveCommon
- Broken control wirePossible
Parts involved
- Fuel Shutoff Valve B
- Solenoid
- Wiring Harness
P2665 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.