P207C: Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit Low (Bank 2)

Low signal on the position feedback of the bank 2 tuning valve: the controller sees a value below the window it accepts. Typical electrical causes are the signal shorted to ground or a missing 5 V supply. No manufacturer publishes P207C. Its bank 1 equivalent P2077 is well documented at GM, where the limit is given in percent and the scale runs backwards (95 % or more counts as low), and FCA cites P2077 for the 3.5L V6 manifold tuning valve; a bank 2 application would follow the same pattern. Ground faults can also kill other sensors on the shared 5 V circuit, so if several sensor codes appear together, look for the common reference first. P207D is the high-side fault.

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

Symptoms

• Check engine light (manufacturer-dependent)
• Other 5 V sensor codes at the same time

Most likely causes

• Bank 2 signal wire shorted to ground
• Shared 5 V reference pulled down or open
• Internal short in the bank 2 sensor

What to check, in order

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

1. Check the vacuum hoses and the connector
2. With the connector unplugged, check whether the signal wire is making contact with ground.
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 P207C means

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

Frequently asked questions

Can I keep driving with code P207C?

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

What causes code P207C?

The most common causes are: bank 2 signal wire shorted to ground; shared 5 V reference pulled down or open; internal short in the bank 2 sensor.

Related codes

• P207DIntake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit High (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)
• P2077Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit Low (Bank 1)

Sources

• law.cornell.edu: 13 CCR 1968.2
• gsi.ext.gm.com: 2006file13
• static.nhtsa.gov: MC 10136933 9999

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.