P0663 — Intake Manifold Tuning Valve Control Circuit/Open Bank 2

powertrain (engine/transmission)

Is it safe to drive?

Short-term driving is OK In most cases the car remains drivable, possibly with reduced performance or a disabled auxiliary system. If symptoms include stalling, no-start or brake/steering warnings, treat it as urgent.

How to diagnose with an OBD scanner

Read the code and freeze frame Connect an OBD2 scanner, confirm P0663 is stored, and save the freeze frame data — it shows engine conditions when the fault was detected.
Check for companion codes and TSBs Related codes often reveal the real root cause. Also check manufacturer technical service bulletins (TSB) for your make and model — many P0xxx issues have factory fixes or software updates. Search by VIN on the manufacturer site or nhtsa.gov.
Inspect wiring and connectors Visually inspect the wiring harness and connectors related to the intake manifold tuning valve control circuit/open bank 2 for damage, corrosion, chafing or poor contact.
Subsystem check Measure reference voltage, ground and signal continuity at the component connector.
Subsystem check Wiggle-test the harness while watching the signal in live data — dropouts reveal broken wires.
Verify the repair Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm P0663 does not return.

Approximate repair cost

Repair cost depends on which component actually failed. Typical scenarios for P0663 (parts and labor, USD, independent shop rates): Repair wiring or connectors: $80–$250; Replace the faulty sensor or actuator: $150–$500; Control module repair: $300–$1,000. Overall, fixing P0663 usually costs between $80 and $1,000. An accurate diagnosis before buying parts saves money — the most expensive scenario is rarely the first one to check.

Common questions

What does OBD2 code P0663 mean?

Intake Manifold Tuning Valve Control Circuit/Open Bank 2 (P0663): a powertrain (engine/transmission) fault affecting the sensor and actuator circuits. The car is usually drivable while you plan the repair. Most often caused by poor ground connection, faulty sensor or actuator of the affected circuit, control module driver fault.

Is it safe to drive with P0663?

In most cases the car remains drivable, possibly with reduced performance or a disabled auxiliary system. If symptoms include stalling, no-start or brake/steering warnings, treat it as urgent.

What are the symptoms of P0663?

Drivers most often notice: possible limp mode depending on the affected component, Check Engine Light on, increased fuel consumption in some cases, the affected system operates intermittently or not at all.

How much does it cost to fix P0663?

Repair wiring or connectors — $80–$250; Replace the faulty sensor or actuator — $150–$500; Control module repair — $300–$1,000. Exact cost depends on the root cause, your vehicle and local labor rates — a proper diagnosis is the cheapest first step.

How do I diagnose P0663 myself?

Start with a scan: confirm P0663, save the freeze frame and note any companion codes. Then inspect the wiring and connectors related to the sensor and actuator circuits, and verify the suspect component against live data before buying parts.

When the engine control unit detects a problem with the intake manifold tuning valve on the opposite side of the engine from cylinder 1, it logs code P0663. This fault falls within the powertrain category, specifically targeting the electrical circuits responsible for operating that valve. The intake manifold tuning valve optimizes air flow into the cylinders at different engine speeds and loads; when its control circuit fails or goes open, the ECU can no longer command proper valve positioning.

P0663 doesn't trigger on a single bad reading. The module watches for the abnormal condition to repeat under specific driving conditions before activating the check engine light. When P0663 is stored, the freeze frame snapshot captured at that moment becomes your diagnostic roadmap — it records engine load, RPM, temperature, and vehicle speed, telling you exactly what was happening when the fault occurred. Use those recorded values to reproduce the scenario during testing.

Bank 2 simply refers to the engine bank that does not contain cylinder 1. Before you begin any testing or replacement on P0663, confirm which bank that is on your particular engine, since V-type engines have two banks and the location varies by manufacturer.

Symptoms of P0663

The check engine light illuminates and typically remains on until the fault is cleared or repaired.
The vehicle may enter a limited-power limp mode, depending on which component failed.
Some drivers notice increased fuel consumption because the engine runs less efficiently without proper manifold tuning.
The affected tuning valve system may operate intermittently or stop working entirely.
Performance may feel noticeably reduced, especially under acceleration.
In rare cases, the engine may run roughly or hesitate during transitions between idle and higher RPM.

Common Causes of P0663

An open or short circuit in the wiring that carries signals between the ECU and the tuning valve assembly.
A corroded, loose, or damaged electrical connector that interrupts proper current flow.
A faulty intake manifold tuning valve sensor or actuator that no longer responds to ECU commands.
A poor or intermittent ground connection at the valve circuit.
A blown fuse that supplies power to the affected circuit.
Wiring harness damage from heat, abrasion, or road debris over time.

Diagnosing P0663

Connect an OBD2 scanner and confirm P0663 is stored. Save the freeze frame data immediately — those engine conditions will guide your entire diagnosis.
Pull all additional stored codes. Related trouble codes often point directly to the root cause rather than just the symptom.
Check for any manufacturer technical service bulletins (TSB) specific to your make, model, and year. Some P0xxx codes have known factory remedies or require a software update rather than part replacement.
Perform a thorough visual inspection of the wiring harness and connectors for the intake manifold tuning valve circuit. Look for broken insulation, corroded pins, bent terminals, or any sign of moisture intrusion.
With the key on and engine off, measure reference voltage and ground at the valve connector. Check signal continuity between the ECU and component. Then conduct a wiggle test on the harness while monitoring live data — any signal dropout indicates a broken wire.
Clear P0663, complete a full drive cycle that reproduces the freeze frame conditions, and verify the code does not return.

Repair Options and Costs

Addressing P0663 means fixing whatever component in the tuning valve circuit has failed:

Wiring harness repair or connector replacement: $80–$250
Intake manifold tuning valve sensor or actuator replacement: $150–$500
Control module diagnosis and repair: $300–$1,000

Always start with the least expensive possibilities. In most cases, P0663 stems from a wiring issue or loose connector rather than a failed module. An accurate diagnosis before purchasing parts keeps total cost toward the lower end of the range.

Total Cost to Fix P0663

Depending on which component actually failed, total repair costs (parts and labor at independent shop rates) typically fall between $80 and $1,000. The wide range reflects the difference between a simple wiring fix and a full control module replacement. An honest technician will verify circuit integrity before recommending any expensive parts, so you can expect the most costly scenario only if all cheaper causes are ruled out first.

Can You Drive with P0663?

P0663 is classified as a short-term severity issue — the vehicle generally remains drivable, though you may experience reduced performance or a disabled auxiliary system. Continue driving only if no stalling, no-start conditions, or brake/steering warnings occur. If any of those symptoms appear, treat the situation as urgent and have the vehicle diagnosed immediately.