P0663
Intake Manifold Tuning Valve Control Circuit/Open Bank 2
Intake / air metering
Generic OBD-II
High
What it means
P0663 means the ECM has detected an open in the circuit that controls the bank 2 intake manifold tuning valve. That valve changes the intake path to boost torque at different engine speeds, so with its circuit open the engine loses some power and efficiency. The engine still runs and drives safely — it just can't optimize airflow on that bank.
High
Can I keep driving? Drivable — the engine runs, but you may notice reduced power, a rougher idle, or poorer economy because intake airflow can't be optimized on bank 2. Safe for short trips while you get it fixed.
Common symptoms
What you'll notice
- Check-engine light on
- Reduced power, especially across the rev range
- Rough or slightly uneven idle
- Decreased fuel economy
Common causes
Most likely first
- Faulty intake manifold tuning (IMT) valve/solenoid on bank 2Likely
- Open or damaged wiring in the control circuitCommon
- Loose or corroded connector at the valveCommon
- ECM fault (rare — verify the valve and wiring first)Less often
How to diagnose & fix
Work through it in order
- Read freeze-frame data, then locate the bank 2 intake manifold tuning valve/solenoid and inspect its connector.
- Check the control wiring for an open or damage between the ECM and the valve.
- Measure the valve/solenoid resistance against spec; an open winding means a failed valve.
- Replace the IMT valve if it's open or unresponsive with good wiring.
- Clear the code and confirm the valve actuates and the code stays off.
FAQ
Quick answers
Is it safe to drive with P0663?+
Yes, for short trips. The intake tuning valve just optimizes airflow — with it stuck you lose some power and economy but the engine runs safely.
Can I just clear P0663?+
It clears, but returns when the ECM next commands the valve and finds the circuit open. Repair the valve or wiring to fix it.
Related codes
Often seen with P0663
Read & clear P0663 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX