P207D: Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit High (Bank 2)

The bank 2 valve position signal reads above the highest value the controller accepts. Electrically that points at a broken sensor ground or a short from the signal to a supply voltage. There is no published manufacturer use of P207D; it mirrors GM's bank 1 code P2078, where 5 % or less counts as high due to the reversed scale, while GM's 2023/2024 logic compares the raw voltage with about 4.8 V. An open ground often comes from heat-damaged connectors on the rear bank, so inspect the plug before ordering a new actuator. Unlike P207B, a high code says nothing about the flap mechanics; the valve may move correctly while its feedback is simply not readable.

Bank 2 is the side without cylinder 1, so it only exists on V or boxer engines.

Symptoms

• Check engine light (manufacturer-dependent)
• No driveability change in most cases

Most likely causes

• Sensor ground open at a heat-damaged connector
• Signal wire shorted to 5 V or battery voltage
• Bank 2 actuator electronics defective

What to check, in order

Start with the simplest. You can tick off each step.

1. Check the vacuum hoses and the connector
2. Check the sensor's ground and make sure the signal wire is not receiving voltage from another circuit.
3. Watch the actuator's movement with the scanner
4. Inspect the manifold for carbon buildup
5. Replace the actuator if it does not follow the command

Good to know

• Repair difficulty: easy
• It affects emissions.

What each character of P207D means

• P: Powertrain: engine and transmission
• 2: Generic code: same on every make
• 0: Subsystem depends on the code range
• 7D: Specific fault in that system

Frequently asked questions

Can I keep driving with code P207D?

You can drive in moderation. Get it repaired soon, because a loose flap can cause major damage on some engines.

What causes code P207D?

The most common causes are: sensor ground open at a heat-damaged connector; signal wire shorted to 5 V or battery voltage; bank 2 actuator electronics defective.

Related codes

• P207CIntake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit Low (Bank 2)
• P207AIntake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit (Bank 2)
• P207BIntake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit Range/Performance (Bank 2)
• P2078Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit High (Bank 1)

Sources

• law.cornell.edu: 13 CCR 1968.2
• gsi.ext.gm.com: 23OBDG07
• gsi.ext.gm.com: 07 GRP12 All Engines

Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.