Faulty fuel shutoff valve 'A' with an internal short or open winding; Damaged or corroded wiring in the valve control circuit, especially at connectors; Short to ground in the control wire between the PCM and the valve; High resistance in the ground circuit for the valve; Corroded or loose PCM connector pins affecting the control signal; Failed PCM driver for the fuel shutoff valve circuit (less common)

DTC codes / P00xx · Fuel and air metering and auxiliary emission controls / P0006

P0006Fuel Shutoff Valve 'A' Control Circuit Low

Q: What does code P0006 mean?

Fuel Shutoff Valve 'A' Control Circuit Low. P0006 indicates that the powertrain control module (PCM) has detected a low-voltage condition on the control circuit for fuel shutoff valve 'A', which is used to stop fuel flow under certain conditions such as deceleration or safety shutdowns. The PCM commands the valve on or off and monitors the circuit for expected voltage; a low reading means the circuit is likely shorted to ground, has excessive resistance, or the valve itself has failed.

P0006 indicates that the powertrain control module (PCM) has detected a low-voltage condition on the control circuit for fuel shutoff valve 'A', which is used to stop fuel flow under certain conditions such as deceleration or safety shutdowns. The PCM commands the valve on or off and monitors the circuit for expected voltage; a low reading means the circuit is likely shorted to ground, has excessive resistance, or the valve itself has failed.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaFuel and air metering and auxiliary emission controls

Symptoms you may notice

Illumination of the check engine light, often with no other noticeable symptoms
Rough idle or stalling when the valve fails to open or close properly
Difficulty starting or a no-start condition if the valve remains closed
A slight fuel smell or rich running if the valve sticks open
Reduced engine performance or poor fuel economy in some cases

Common causes, most likely first

Faulty fuel shutoff valve 'A' with an internal short or open winding
Damaged or corroded wiring in the valve control circuit, especially at connectors
Short to ground in the control wire between the PCM and the valve
High resistance in the ground circuit for the valve
Corroded or loose PCM connector pins affecting the control signal
Failed PCM driver for the fuel shutoff valve circuit (less common)

How to diagnose and fix it

Verify the code with a scan tool and check for any related codes in other systems
Inspect the fuel shutoff valve connector and wiring for corrosion, damage, or loose pins
Measure the resistance of the fuel shutoff valve and compare to the manufacturer's specification
Check for a short to ground or excessive resistance in the control wire from the PCM to the valve
Test the ground circuit for the valve to ensure it is clean and tight
If the circuit and valve test good, check the PCM connector and consider a PCM driver fault
Clear the code and perform a road test to confirm the repair

Don't overlook the simple wiring checks

A low-voltage code often results from a simple chafed wire or corroded connector rather than a failed valve, so always inspect the harness before replacing parts.
The fuel shutoff valve may be part of a larger fuel pump or injection assembly on some vehicles, making replacement more involved than expected.
A weak battery or charging system can cause false low-voltage codes on multiple circuits, so verify battery and ground integrity first.
The PCM may set this code intermittently if the valve is sticking mechanically, even when electrical tests pass; a live data check of the valve command can reveal this.
Do not assume the valve is bad just because the code says 'low'—a shorted control wire can produce the same reading and is far cheaper to fix.

Can I keep driving with P0006?

If the vehicle runs normally, you can drive it to a repair shop, but avoid hard acceleration or towing until the fault is fixed. If the engine stalls, hesitates, or refuses to start, stop driving and have the vehicle towed to prevent safety risks.

Tools that help

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Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.