Intake Manifold Runner Control Stuck Open (Bank 1)
The intake manifold runner control is stuck in the open position.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
Inside your engine, there's a part that controls how much air flows in by adjusting little flaps. When it’s stuck open, the engine gets too much air, which can cause poor performance.
What the computer is actually seeing
The engine control module (ECM) monitors the intake manifold runner position via a sensor and checks for proper actuator operation. If the actual position does not match the desired position, it triggers this code.
What a healthy reading looks like
Expect the intake manifold runner sensor voltage to be between 0.5V and 4.5V with the runner closed; it should vary with position when operating correctly.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 1Check for intake manifold runner control actuator movement by applying 12V across the actuator. If it doesn't move, replace it.
- 2Inspect wiring and connectors to the actuator for damage or corrosion. Repair as necessary.
- 3Test the intake manifold runner position sensor according to your service manual; replace if it does not output the expected voltage range when the runner position changes.
- 4Clear the code and do a road test. If the code comes back, continue with further diagnosis.
Common causes
- Faulty intake manifold runner control actuator
- Wiring issue or connector problem to the actuator
- Faulty intake manifold runner position sensor
- Malfunctioning ECM software
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It’s not recommended as it can lead to poor engine performance and fuel efficiency.
Will this code come back after clearing?
It can, especially if the underlying issue isn't fixed.
Why does this code pair with other P200x codes?
They often indicate similar intake manifold runner control issues.
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