P0007 OBD-II Trouble Code: Fuel Shutoff Valve "A" Control Circuit High

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P0007 is a diagnostic trouble code (DTC) for "Fuel Shutoff Valve "A" Control Circuit High". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

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P0007 code definition

The P0007 code is associated with an electrical circuit which connects from your engine computer to your fuel system and is most commonly found on diesel engines. It also may be related to other codes, such as P0005 or P0006.

What the P0007 code means

P0007 is a generic OBD-II code indicating an issue with the engine control module (ECM) not receiving correct signals from your fuel shutoff valve. The fuel shutoff valve is located at the fuel supply rail mounted to your engine.

The ECM uses the fuel shutoff valve to prevent fuel from entering the engine when you turn it off. By doing this, the valve prevents your engine from continuing to run after you turn the key off (a term we call “dieseling”). The code will possibly cause dieseling or prevent the engine from starting. The Check Engine Light will also turn on.

What causes the P0007 code?

The Fuel Shutoff Valve "A" Control Low code may have several causes:

  • Possible damage to the valve’s connector
  • A broken wire going to the ECM
  • A defective fuel shutoff valve
  • The ECM is damaged internally

What are the symptoms of the P0007 code?

The P0007 code will produce a Check Engine Light on the dashboard. Likely symptoms include:

  • Your engine continuing to run after the key is turned off
  • Your engine not starting because it cannot build enough fuel pressure
  • Possible stalling while idling or driving

How does a mechanic diagnose the P0007 code?

P0007 is properly diagnosed with an advanced scan tool capable of factory sensor readings (not just one from your local auto parts store) and a voltage meter. A qualified technician can read the data from the advanced scan tool to determine when and where the problem occurred or if it is still occurring. They may clear the code from the ECM and test drive the vehicle while monitoring the scan tool data to see if the fault returns or is constant.

Connectors and wiring may have to be inspected for damage which may require cutting open the protective covering, inspecting the wiring harness, repairing the problem, and replacing the covering.

Based upon the conditions of the testing, possible clearing of the code(s), and a road test while monitoring the data, further diagnosis may be required. Diagnosis will require multiple tools such as:

  • An advanced scan tool to read the ECM data values
  • A digital voltage meter with attachments
  • Basic hand tools to access the sensor and wiring
  • A razor blade for wiring harness coverings

Common mistakes when diagnosing the P0007 code

Just replacing the fuel pressure shutoff valve doesn’t guarantee a successful repair and may be very expensive and labor intensive. It may be caused by several other components in the electrical system and wiring as listed above or even more. Visual inspection and testing with the equipment listed above will verify your issue before replacing the fuel shutoff valve unnecessarily.

I have seen people spend hundreds of dollars replacing this valve only to find out the problem was just a broken wire.

How serious is the P0007 code?

The P0007 fault code may cause your vehicle to have:

  • Lower fuel economy
  • Inability to start
  • Dieseling issues (not turning off)
  • Stalling issues at anytime while driving
  • Inability to pass emissions testing

A qualified technician can diagnose the problem with proper tools and can verify these potential issues and any effects on your other systems.

What repairs can fix the P0007 code?

The most common procedure to repair the P0007 code is as follows:

  • Connect a professional scan tool to verify the code exists.

  • Perform research from professional sources for testing and values based upon the code.

  • Check for any other fault codes which may be related to the issue.

  • Perhaps clear the fault codes to see which fault codes return.

  • Analyze scan tool data from the ECM.

  • Road test the vehicle while analyzing the scan tool data from the ECM with other tools attached.

  • Verify if the P0007 code returns or the symptoms exist.

  • Visually inspect all of the items listed above (wiring, voltages, etc.).

  • Further diagnose the problem with the special tools listed above if the problem appears to repeat.

  • The signals and wiring from the sensor require analyzation to determine where the problem exists. If the signals are fine, then further testing of the the wiring, computer, or fuel system is required.

  • Replace the fuel shutoff valve, wiring, or the faulty component.

Additional comments for consideration regarding the P0007 code

Any electrical related code such as this may persist all of the time or may occur intermittently. Some fault codes will require additional time to diagnose properly. With this code, the solution may be simple to replace or require extensive time to diagnose and repair. Depending on your vehicle, it may take several hours to determine the root cause and repair the faulty component.

The P0007 code involves many systems. After using a scan tool and monitoring the voltage readings, a qualified technician can determine if the fuel shutoff valve, wiring, or other component is at fault. With the scan tool connected, I evaluate the data while checking the voltage meter to ensure all the values match, meet specifications, and perform a visual inspection. From there, pinpointing where to start further diagnosis can begin.

The fuel shutoff valve may be the cause, wiring issues might be broken due to rubbing on another engine component, rodents may have chewed through wiring anywhere in the vehicle, connectors may have damage, or you may have a bad ECM.

Vehicles with higher mileage may just need a fuel shutoff valve replacement. However, replacing parts based upon a code is not recommended. I have seen very few of the valves at fault and most of the time the problem exists in the wiring.

Need help with a P0007 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

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