P0006
UniversalFuel Shutoff Valve Control Circuit Low
High SeverityThis code indicates that the vehicle's engine control module (ECM) has detected a low voltage condition in the circuit that operates the fuel shutoff valve. This electrical fault prevents the valve from operating correctly, potentially leading to a no-start condition or the engine stalling while driving.
⚠️ Before You Begin (Safety First)
Always disconnect the battery before working on electrical components. Be extremely cautious when working around the fuel system, as fuel is highly flammable. Ensure good ventilation to avoid inhaling fuel vapors.
Common Symptoms
- Check Engine Light illuminated
- Engine cranks but does not start
- Engine stalls unexpectedly
- Rough idling or poor engine performance
Common Causes
- Faulty fuel shutoff valve
- Corroded, open, or shorted wiring in the fuel shutoff valve control circuit
- Loose or corroded electrical connections to the fuel shutoff valve
- A faulty fuse or relay related to the fuel shutoff valve
- Faulty Engine Control Module (ECM)
Frequently reported on: General/Universal
Diagnostic Steps
- Visually inspect the wiring and connectors leading to the fuel shutoff valve for any obvious damage, corrosion, or loose connections.
- Check the fuse associated with the fuel shutoff valve (refer to your vehicle's service manual for location).
- Using a multimeter, test for proper voltage and continuity at the fuel shutoff valve connector (with ignition on/off as specified by manual).
- If accessible, try to test the resistance of the fuel shutoff valve itself to see if it's within specifications.
- Clear the code and re-test after any adjustments or repairs.
👨🔧 When to Call a Professional
If you have checked the basic wiring and connections and cannot identify the electrical fault, or if the engine stalls unexpectedly while driving, it is crucial to consult a professional mechanic for proper diagnosis and repair to ensure vehicle safety and reliability.
Commonly Asked Questions
What is a fuel shutoff valve?
A fuel shutoff valve is an electrical or vacuum-actuated device that controls the flow of fuel to the engine, often used as an anti-theft measure or for emergency engine shutdown.
Can I drive with a P0006 code?
It is not recommended to drive with a P0006 code, as it can cause the engine to stall unexpectedly or prevent it from starting, creating a dangerous situation.
How do I locate the fuel shutoff valve?
The location varies by vehicle, but it is typically found near the fuel pump, fuel filter, or integrated into the fuel injection pump on some diesel engines. Consult your vehicle's service manual.
Is this an expensive repair?
The cost can vary. If it's just a loose wire, it could be free. If the valve or ECM needs replacing, it could range from moderate to expensive, plus diagnostic labor.
Can a bad relay cause P0006?
Yes, a faulty relay that supplies power to the fuel shutoff valve's control circuit can definitely cause a low voltage condition and trigger the P0006 code.