What it means
The first fuel shutoff valve stays open when commanded closed. Fuel cannot be cut off via this path during a safety event.
At a glance
- Usually lights the check-engine light
How it works
Fuel shutoff valve A is meant to stop fuel flow through its path when the control module commands it closed. This code means the valve remains on or open despite that command, so the module may be unable to cut fuel through this path when required.
Common causes
Most likely first.
- Valve seized open by debris
- ECU output driver stuck on
- Carbon or debris buildup preventing free movement
Symptoms
- Check-engine light
- Engine may continue running after shutdown
- Fuel may not shut off as expected
How to diagnose it
- Review freeze-frame data and related fuel-system codes, and note whether the engine continued running after shutdown.
- Inspect fuel shutoff valve A, its connector, and wiring for damage, corrosion, or signs of a short.
- Use a scan tool, if supported, to command valve A closed and check whether its status changes.
- Test the valve A control circuit for a short or an output that remains energized, following the manufacturer's specification.
- If the electrical command turns off correctly, check whether debris or a seized mechanism is holding valve A open.
Common fixes
- Repair a shorted wire or damaged connector at fuel shutoff valve A.
- Remove debris if it is preventing valve A from closing.
- Replace a valve A solenoid or valve that remains mechanically open.
- Repair the control module output only after testing confirms its driver is stuck on.
Can I keep driving?
If the engine will not shut off normally or fuel cannot be stopped as expected, park safely and seek prompt repair; do not continue driving with an uncontrolled engine shutdown function. A valve that remains open can prevent fuel cutoff when needed.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.