P0006, a generic OBD-II powertrain diagnostic trouble code that indicates a low electrical condition in the Fuel Shutoff Valve A Control Circuit. The ECM/PCM has detected that the control circuit voltage or electrical response is below the expected range.
P0006 does not automatically mean that the fuel shutoff valve itself has failed. The problem may involve the valve, wiring, connector, power supply, control circuit, fuse, ground, or ECM/PCM driver. The exact circuit design and diagnostic procedure vary by vehicle.
Is P0006 Serious?
P0006 should be diagnosed promptly. The severity depends on the vehicle and the actual cause of the circuit fault.
On some vehicles, a fuel shutoff valve may be involved in fuel-delivery or fuel-control functions, while the exact purpose and operating strategy can differ between manufacturers and engines.
An electrical fault may initially cause only a Check Engine Light, but a valve-control problem can potentially affect engine operation or starting depending on the vehicle design.
Can I Drive With P0006?
Limited driving may be possible if the engine starts and operates normally and there are no additional warning signs. However, P0006 should not be ignored because the circuit may affect fuel-system operation.
If the engine stalls, has difficulty starting, loses power, or develops additional fuel-system or electrical faults, avoid continued driving until the vehicle is diagnosed.
P0006 Repair Cost
Approximately $50–$150+
Approximately $30–$150+
Approximately $50–$250+
Approximately $100–$500+
These are general estimates only. Actual costs depend on the vehicle, valve design, accessibility, parts prices and labor rates. Some applications may require additional fuel-system diagnosis.
Symptoms of P0006
- Check Engine Light.
- Engine may be difficult to start.
- Possible engine starting problems.
- Engine may stall on some applications.
- Reduced engine performance in some cases.
- Irregular fuel-system operation.
- Additional fuel or electrical codes may be stored.
- In some vehicles, there may be little or no noticeable drivability symptom.
Common Causes of P0006
- Faulty fuel shutoff valve A.
- Open control-circuit wiring.
- Shorted control circuit.
- High-resistance wiring or connections.
- Damaged electrical connector.
- Corroded or loose terminals.
- Incorrect power supply.
- Blown fuse where applicable.
- Poor ground connection.
- Damaged wiring near heat or moving components.
- Fuel-system component problem affecting valve operation.
- ECM/PCM control-driver fault.
Fault Code Description
P0006 = Fuel Shutoff Valve A Control Circuit Low.
Generic OBD-II Powertrain Code
Fuel Shutoff Valve Control
Control circuit low
The word Low refers to the electrical condition detected in the control circuit. It does not necessarily mean that fuel pressure is low or that the engine is receiving insufficient fuel.
What Does P0006 Mean?
The fuel shutoff valve control system allows the engine control module to control or monitor a fuel shutoff function. The exact purpose of the valve depends on the vehicle's fuel-system design.
When the ECM/PCM detects that the electrical condition in the Fuel Shutoff Valve A control circuit is lower than expected, it may store P0006.
The fault can be caused by an electrical circuit problem rather than a mechanically failed valve. This is why the complete circuit should be tested before replacing the valve.
P0006 Fuel Shutoff Valve Location
The exact location of the Fuel Shutoff Valve A varies significantly between vehicles.
Depending on the fuel-system design, the valve may be located near the fuel tank, fuel supply system, fuel rail, fuel pump assembly or another fuel-system component.
Do not assume that the valve has the same location or wiring configuration on every vehicle. Always use vehicle-specific service information to identify the correct component.
P0006 Diagnostic Signal Flow
↓
Fuse / Protected Circuit
↓
Fuel Shutoff Valve A
↓
Control Circuit
↓
ECM / PCM Driver
↓
Circuit Monitoring
The actual circuit arrangement varies between manufacturers. Some systems may provide power to the valve and use the ECM/PCM to control the other side, while other designs can use different control strategies.
How to Diagnose P0006
1. Scan for All Stored Codes
Use an OBD-II scanner to confirm P0006 and check for stored, pending and manufacturer-specific codes.
Additional fuel-pressure, fuel-pump, voltage or communication codes may help identify the underlying problem.
2. Check Freeze-Frame Data
If freeze-frame information is available, record the engine RPM, battery voltage, fuel-system data, engine load and other relevant parameters stored when the fault occurred.
3. Inspect the Fuel Shutoff Valve
Locate the correct Fuel Shutoff Valve A using the vehicle-specific service information.
Inspect the valve and surrounding wiring for physical damage, fuel contamination, corrosion, loose terminals, damaged insulation or signs of heat exposure.
4. Check the Fuse and Power Supply
If the valve circuit uses a fuse or dedicated power supply, verify the circuit according to the wiring diagram.
If a fuse is blown, determine why it failed before installing another fuse.
5. Test the Control Circuit
Check the control wire for continuity, unwanted shorts and excessive resistance.
Because P0006 indicates a low electrical condition, a short to ground, wiring damage or an incorrect circuit voltage can be important diagnostic possibilities.
6. Test the Valve
Where permitted by the manufacturer, test the valve's electrical resistance and operating response according to the specified procedure.
Do not apply a universal resistance value to every fuel shutoff valve because valve designs vary between vehicles.
7. Check ECM/PCM Control
If the valve, power supply, wiring and connectors test correctly, verify the ECM/PCM control signal using the manufacturer's diagnostic procedure.
The ECM/PCM should not be replaced based on P0006 alone.
P0006 OBD Live Data
Depending on the vehicle and scan tool, useful diagnostic data may include:
- Fuel pressure or commanded fuel pressure.
- Fuel pump command.
- Fuel system status.
- Battery voltage.
- Engine RPM.
- Engine load.
- Fuel shutoff or valve status where supported.
Live Data should be compared with the actual vehicle condition and manufacturer specifications. A scanner may show the commanded state of a component, but direct electrical testing may still be necessary to determine whether the command reaches the valve.
P0006 Multimeter Testing
A digital multimeter can help identify circuit faults.
- Identify the valve terminals using the correct wiring diagram.
- Check the valve power supply.
- Check the control-circuit voltage.
- Check circuit continuity.
- Check for unwanted shorts to ground.
- Check for unwanted shorts to power.
- Measure valve resistance where specified.
- Perform voltage-drop testing on power and ground circuits where applicable.
Always compare measurements with manufacturer specifications for the exact vehicle.
P0006 Oscilloscope Testing
An oscilloscope can be useful when the fuel shutoff valve is controlled electronically or when an intermittent control-circuit fault is suspected.
Depending on the system, the control signal may be a switched or pulse-width-modulated signal. The expected waveform, voltage and duty cycle should be compared with vehicle-specific specifications.
▔▔▔▔▔▔▔▔▔▔▁▁▁▁▁▁▁▁▁▁▔▔▔▔▔▔▔▔
The waveform shown is illustrative only. Actual signal shape depends on the vehicle's control strategy.
Important: P0006 specifically identifies a low electrical condition. P0005 and P0007 are separate codes and should not be treated as alternate definitions of P0006.
Common Repair Mistakes
Replacing the Valve Immediately
Do not replace the fuel shutoff valve without first checking the wiring, connector, power supply and control circuit.
Assuming Low Means Low Fuel Pressure
The word "Low" describes the electrical control-circuit condition. It does not automatically mean that fuel pressure is low.
Ignoring the Fuse
A blown fuse can interrupt valve operation, but the reason for the blown fuse should be identified before replacement.
Ignoring Wiring Damage
Fuel-system wiring can be exposed to heat, vibration, moisture and mechanical damage. Inspect the complete circuit.
Replacing the ECM Too Early
An ECM/PCM failure is possible but should only be considered after the valve and circuit have been properly tested.
Recommended Diagnostic Tools
For DTCs, Freeze Frame and Live Data.
For voltage, resistance, continuity and circuit testing.
For identifying the correct valve circuit and terminals.
For analyzing electronic control signals and intermittent faults.
Related OBD-II Codes
These codes are closely related to the Fuel Shutoff Valve A control circuit, but they are separate diagnostic trouble codes:
Use the exact code stored by the vehicle rather than substituting a related code definition.
FAQ About P0006
Does P0006 mean the fuel shutoff valve is bad?
Not necessarily. The valve, wiring, connector, fuse, power supply, control circuit or ECM/PCM driver can cause the code.
Does P0006 mean low fuel pressure?
No. P0006 identifies an electrical control-circuit condition. Low fuel pressure is a different diagnostic issue and should be tested separately.
Can wiring cause P0006?
Yes. Damaged wiring, short circuits, high resistance, corrosion and poor electrical connections can cause P0006.
How do I fix P0006?
Confirm the code, inspect the fuel shutoff valve and wiring, check the fuse and power supply, test the control circuit and verify the ECM/PCM control signal before replacing components.
Can I drive with P0006?
Limited driving may be possible if the engine operates normally, but the fault should be diagnosed promptly. Starting problems, stalling or loss of power require immediate attention.
Is P0006 a generic OBD-II code?
Yes. P0006 is a generic OBD-II powertrain code, although the exact valve location, circuit design and diagnostic procedure vary between vehicles.
Final Takeaway
P0006 indicates a low electrical condition in the Fuel Shutoff Valve A Control Circuit. It does not automatically prove that the valve itself has failed or that fuel pressure is low.
The most reliable diagnosis is to inspect the valve, connector, fuse, power supply, wiring and control circuit in the correct sequence. Direct electrical testing should be used when scanner information cannot identify the exact fault.
Always use the wiring diagram and specifications for the exact vehicle before replacing the fuel shutoff valve or ECM/PCM.