P0663 Intake Manifold Tuning Valve Control Circuit/Open (Bank 2)

P0663 indicates an open or general fault in the intake manifold tuning valve control circuit on Bank 2. The Bank 2 runner or tuning valve path is not responding correctly.

Code details

Generic OBD-II · P0

System: Computer
Code type: Generic (SAE / ISO controlled)
Standard: SAE J2012 / ISO 15031-6

Diagnostic boundary

A diagnostic trouble code reports that a monitored test failed. It does not prove one specific part is bad, and manufacturer logic can add vehicle-specific conditions.

Do not assume Bank 2 is identical to Bank 1; verify bank-specific wiring, actuator, and linkage.

Symptoms of P0663

Check-engine light, sometimes with several unrelated codes at once.
Warning lights, a no-start, or intermittent electrical faults.
Communication or module-reset problems on a scan tool.

Common causes of P0663

Low battery voltage, poor grounds, corroded connectors, or blown fuses.
Wiring or network (CAN bus) faults between modules.
A module software/programming issue, or rarely a failed controller.

Useful checks before replacing parts

Check Bank 2 tuning valve command, position feedback where available, intake airflow, manifold pressure response, freeze-frame RPM and load, and Bank 1 comparison.
Inspect Bank 2 actuator wiring, connector condition, vacuum supply where used, linkage binding, carbon buildup, solenoid control, and ground path.
Command the valve and verify both electrical response and actual Bank 2 manifold tuning movement.

Related OBD-II codes

These nearby computer entries can help compare wording and pin down the fault area.