P0005 critical

Fuel Shutoff Valve "A" Control Circuit/Open

The P0005 code means the vehicle's onboard diagnostic system has detected: Fuel Shutoff Valve "A" Control Circuit/Open. This is a critical severity code.

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Keep driving?: No -- stop driving
DIY difficulty: hard
Estimated cost: $200 - $700 (parts and labor)

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Common Symptoms

Engine will not start
Engine stalls and will not restart
Check Engine Light on
Fuel shutoff warning indicator

Probable Causes (Ranked by Likelihood)

Open circuit in fuel shutoff valve wiring Very High
Failed fuel shutoff valve solenoid High
Disconnected or corroded connector at shutoff valve Moderate
Blown fuse in fuel shutoff circuit Moderate

Step-by-Step Diagnostic Procedure

Check all fuses related to the fuel system and fuel shutoff valve circuit
Inspect the fuel shutoff valve connector for corrosion, backed-out pins, or physical damage
Measure resistance across the fuel shutoff valve solenoid; an open reading confirms a failed valve
Trace wiring from ECM to shutoff valve checking for breaks, especially at flex points and connectors

Frequently Asked Questions

What is a fuel shutoff valve?

The fuel shutoff valve is a safety device that cuts fuel supply to the engine. It is commonly used on diesel engines to shut down the engine since diesels do not have a throttle to cut airflow. When this valve fails open-circuit, the ECM cannot control fuel delivery.

Why will my engine not start with P0005?

If the fuel shutoff valve cannot be energized due to an open circuit, it remains in its default closed position, blocking fuel to the engine. Without fuel, the engine will crank but not start.

Can a blown fuse cause P0005?

Yes. A blown fuse in the fuel shutoff valve circuit will cause an open circuit condition. Check the fuse box for the fuel system fuses before replacing more expensive components.