P0006: shutoff valve a control circuit low. Diagnose the circuit before replacing parts.
Meaning, symptoms, causes and checks
Fuel shutoff valve A has a low control-circuit condition. Low refers to the electrical monitor, not fuel quantity or pressure.
Affected system: Powertrain
Symptoms
- Hard starting or no start if fuel delivery is affected.
- Engine warning lamp; reduced power or stalling.
Possible causes
- Short to ground, missing supply or high-resistance connection, depending on control design.
- Internal actuator or control-driver electrical fault after wiring is excluded.
What to check
- Identify fuel shutoff valve A by VIN and check wiring and subcodes before measuring.
- Save failure conditions and related codes; establish whether shutoff valve a is commanded when the fault returns.
- Inspect connector, heat/vibration-exposed wiring and shared supplies before replacing components.
- Test for ground shorts and supply voltage drops in the specified command state.
- Compare command and electrical response with engine specifications; verify the repair under the original conditions.
Also written as: P0006-00, P000600, PO006 (some scan tools add the fault-type byte, e.g. -00).