P0663Generic code

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

The P0663 code means the bank 2 variable intake valve control circuit is open, so the valve does not get current when it is commanded. It can cause a slight loss of power at certain engine speeds. Check the fuse, connector and wiring first.

Severity
Low
Can I keep driving?
Yes, no immediate risk
Estimated cost
$40 to $600
Difficulty
Medium
System
Air and Fuel
Applies to
All OBD2 vehicles

Updated Reviewed by Renzo Chacca

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What the P0663 code means

This is the same as the bank 1 valve, but on the side opposite cylinder 1 on V engines.

The computer watches the control circuit from its own driver transistor. The P0663 code flags an open circuit: the component does not get current when it is commanded on. Before you replace the component, check the fuse, relay, connector and wiring, which are the most common causes.

If it fails, one bank works with the valve in a fixed position, which means a slight loss of power.

Measure the resistance of the component at its connector. If it is infinite, the component is open inside. If it is correct, follow the control wire back to the computer looking for a break, especially in the sections near the exhaust and at inline connectors.

P0663 code symptoms

  • Check engine light or another warning light on.
  • Loss of torque at certain rpm.
  • Less power in some rpm ranges.

Likely causes of the P0663 code

  1. Unplugged connector or one with a broken lock.
  2. Open coil. Infinite resistance.
  3. Cut wire. Check the areas where the harness rubs.
  4. Blown fuse. Often caused by an earlier short.

How to diagnose the P0663 code step by step

  1. Activate the component with the scan tool and check whether it responds.
  2. Check the fuse and relay. Measure the voltage on both sides of the fuse, and swap the relay with an identical one.
  3. Measure the supply at the connector. You should see battery voltage with the key on or when the component is activated.
  4. Measure the resistance of the component and compare it with the manual. Also check the insulation to ground.
  5. Check the control wire for continuity to the computer and for shorts.

How to fix the P0663 code

  • Repair the connector, the wiring or the power supply.
  • Replace the bank 2 variable intake valve if it does not respond even with correct power and command signals.
  • Clear the codes and verify the repair.

Technical reference data

  • Electric or vacuum actuator.
  • Reference values: check the manufacturer data for your vehicle.

Brand-specific notes

This code shows up on V engines, where there is a valve for each bank.

P0663 on Ford V6 and V8 Engines

It appears on Ford V6 and V8 engines.

P0663 on Mazda V6 and V8 Engines

It appears on Mazda V6 and V8 engines.

P0663 on GM V6 and V8 Engines

It appears on GM V6 and V8 engines.

Frequently asked questions about P0663

Can I drive with a P0663 code?
Yes, with caution. The engine runs, but one bank works with the valve in a fixed position, so you may notice a slight loss of power.
What does the bank 2 variable intake valve do?
It works like the bank 1 valve, but on the side opposite cylinder 1 on V engines.
Do I always have to replace the part?
No. Check the fuses, relays, connectors and wiring first, because they are the most common cause.
How much does it cost to fix P0663?
As a rough guide, between $40 and $600. A fuse or connector repair is at the low end, and a new valve is at the high end.
What does the P0663 code mean?
It is a generic OBD2 code that means the bank 2 intake manifold tuning valve control circuit is open.
What is the most common cause of P0663?
An unplugged connector, a cut wire or a blown fuse. A fuse that blew because of an earlier short is a common story behind a P0663 code.

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Questions about the P0663 code

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