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P0006 — Fuel Shutoff Valve Control Circuit Low

Generic OBD-II · all makesPowertrain (engine & transmission)

P0006 indicates that the control circuit for the fuel shutoff valve is reading a voltage lower than expected, meaning the valve is not receiving the proper command signal. This can prevent the valve from opening, leading to a loss of fuel delivery to the engine.

Symptoms

What causes it — most likely first

1. Open or shorted wiring in the fuel shutoff valve control circuit

A broken wire, damaged insulation, or a short to ground can pull the control voltage low.

2. Faulty fuel shutoff valve (solenoid) internal coil

An internally shorted coil can draw excessive current, causing the PCM to detect a low voltage condition.

3. Corroded or loose connector at the valve or PCM

Poor contact adds resistance, dropping the voltage seen by the control module.

4. Defective PCM output driver for the valve circuit

A failed driver transistor inside the control module can fail to supply the required voltage.

5. Blown fuse or faulty relay supplying power to the valve circuit

Loss of supply voltage will appear as a low control signal to the PCM.

How it's diagnosed

  1. Retrieve all stored codes and note any related fuel system codes.
  2. Visually inspect the wiring harness and connectors for damage, corrosion, or loose terminals.
  3. Measure the voltage at the valve connector while the PCM commands the valve on; compare to specification.
  4. Check continuity and resistance of the control circuit between the PCM and valve.
  5. Test the valve coil resistance and verify proper operation with a bench test if accessible.

Code facts & related codes

SystemPowertrain (engine & transmission)
StandardizationSAE generic — identical on every make
Related codesP0001 — Fuel Volume Regulator Control CircuitoP0002 — Fuel Volume Regulator Control Circuit P0003 — Fuel Volume Regulator Control Circuit P0004 — Fuel Volume Regulator Control Circuit P0005 — Fuel Shutoff Valve Control CircuitopenP0007 — Fuel Shutoff Valve Control Circuit Hig

Frequently asked

Is the PCM usually the cause of P0006?

No. The PCM is rarely the root cause; wiring faults, connector issues, or a failed valve are far more common.

Can a blown fuse cause this code?

Yes. If the fuse that supplies power to the valve circuit is open, the PCM will see a low control voltage and set P0006.

Will clearing the code fix the problem?

Clearing the code only removes the stored fault; the underlying circuit issue will cause the code to return until repaired.

What should be checked first when diagnosing P0006?

Start with a visual inspection of the wiring and connectors, then verify voltage at the valve connector while the system is commanded on.