What Does P0005 Mean?
P0005 indicates an open or general circuit fault in the Fuel Shutoff Valve 'A' control circuit. This valve is used to cut fuel supply to the engine during shutdown or emergency conditions, commonly found on diesel engines. When the ECM cannot communicate with or control this valve, the engine may fail to shut off normally, or it may not start at all. The driver may notice the engine continuing to run briefly after turning off the key, or difficulty starting.
Safety Warning
If the fuel shutoff valve cannot be controlled, the engine may not shut off when the key is turned off (diesel runaway risk) or may not start at all. This is a serious safety concern on diesel engines. Do not drive until the valve is verified to be operational.
Common Causes
35%
Open circuit in the fuel shutoff valve wiring harness due to a broken wire, corroded terminal, or disconnected plug
30%
Failed fuel shutoff valve solenoid with an open coil winding
15%
ECM driver output failure preventing the control signal from reaching the solenoid
10%
Corroded or damaged fuse in the fuel shutoff valve power supply circuit
10%
Poor chassis or engine ground preventing the solenoid circuit from completing
Diagnostic Steps
1
Locate the fuel shutoff valve (typically on or near the injection pump on diesel engines) and disconnect the electrical connector — inspect for corrosion, bent pins, and moisture.
2
Measure the solenoid coil resistance — typical spec is 5-20 ohms depending on manufacturer. An OL (open) reading confirms a failed solenoid.
3
With the connector disconnected, verify the ECM is sending a command signal — backprobe the harness side and check for battery voltage with the key on.
4
Check the fuel shutoff valve fuse in the underhood fuse box — verify it is intact and the fuse socket terminals are clean and tight.
5
Perform a continuity test on each wire from the solenoid connector to the ECM connector to isolate any open in the harness.
Estimated Repair Cost
$100 - $600
Parts + labor, varies by vehicle and location
P0005 indicates an open or general circuit fault in the Fuel Shutoff Valve 'A' control circuit. This valve is used to cut fuel supply to the engine during shutdown or emergency conditions, commonly found on diesel engines. When the ECM cannot communicate with or control this valve, the engine may fa...
The most common cause of P0005 (Fuel Shutoff Valve "A" Control Circuit/Open) is: Open circuit in the fuel shutoff valve wiring harness due to a broken wire, corroded terminal, or disconnected plug
Typical repair costs for P0005 range from $100 to $600, depending on the vehicle, location, and whether you do it yourself or go to a shop.
If the fuel shutoff valve cannot be controlled, the engine may not shut off when the key is turned off (diesel runaway risk) or may not start at all. This is a serious safety concern on diesel engines. Do not drive until the valve is verified to be operational.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0005 to identify the root cause.
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Quick Info
Category
Powertrain
System
Fuel System
Difficulty
Type
Generic (SAE)
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