Wiring in the valve control circuit chafed and shorted to ground; Faulty fuel shutoff valve with an internal short in the solenoid coil; Corroded, damaged or loose connector at the valve or control unit; Fault in the shared power or ground supply to the valve circuit, such as a blown fuse or poor earth; Water ingress or contamination in the connector or harness; Internal driver fault in the engine control unit; Outdated or faulty control unit software where the manufacturer has documented it as a cause.

P0006

Fuel Shutoff Valve A Control Circuit Low.

Generic
Powertrain
Generic code
Medium severity

How this code is built

P: SystemPowertrain
0: Defined bySAE, the same on every car
0: AreaFuel and air metering, auxiliary emission controls
06: FaultThe specific fault in that area

What it means

P0006 is the SAE J2012 generic code for a low voltage condition in the control circuit of Fuel Shutoff Valve A. The engine control unit monitors the valve's driver circuit and sets the code when the circuit voltage is lower than expected, which points to a short to ground or a driver fault. The valve's location and function depend on the vehicle and fuel system, so check the manufacturer information for your model.

Symptoms

Malfunction indicator lamp on
Engine cranks but does not start or is hard to start
Engine stalls or cuts out unexpectedly
Loss of power or limp mode on some vehicles
Rough running or hesitation
Fuel smell if the valve is stuck open (rare)

Possible causes

Wiring in the valve control circuit chafed and shorted to groundlikely
Faulty fuel shutoff valve with an internal short in the solenoid coillikely
Corroded, damaged or loose connector at the valve or control unitpossible
Fault in the shared power or ground supply to the valve circuit, such as a blown fuse or poor earthpossible
Water ingress or contamination in the connector or harnesspossible
Internal driver fault in the engine control unitrare
Outdated or faulty control unit software where the manufacturer has documented it as a causerare

How to diagnose

Read all stored and pending codes and note the freeze frame data, including engine speed, battery voltage and coolant temperature
Check for related fuel system or supply voltage codes and any manufacturer bulletins for the model and engine
Visually inspect the valve, its connector and the harness for chafing, heat damage, corrosion, water and loose pins
Check the relevant fuses and relays and confirm the power and earth supplies to the valve circuit
Measure the valve solenoid resistance and compare it with the manufacturer specification for the model
With the connector unplugged, test the control wire for a short to ground and for continuity back to the control unit
Command the valve with a suitable scan tool test if supported, and watch the circuit voltage with a multimeter or oscilloscope
Check the control unit software status against the manufacturer's records before suspecting the control unit

How to fix

Repair or replace damaged wiring and secure it away from sharp edges and heat
Replace the fuel shutoff valve if the coil resistance is out of specification or the valve is faulty
Clean or replace corroded or damaged connectors and terminals
Restore a blown fuse only after finding the cause of the overload, and repair poor earths
Update the control unit software only if the manufacturer lists it as a fix for this fault
Replace or repair the control unit only after the wiring and valve have been proven good

Can I keep driving?

Medium severity

The car may run normally or may stall or fail to restart, depending on the fault. Avoid long journeys and have it checked soon, as an unexpected stall can be unsafe.

Guide written by AI from the code's definition. Confirm with a diagnosis before replacing parts.