Intake Manifold Runner Control Range/Performance Problem
This code indicates an issue with the intake manifold runner control system.
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)
When the intake manifold runners get stuck or don't move properly, the engine can't adjust airflow correctly, which can hurt performance and efficiency.
What the computer is actually seeing
The engine control module (ECM) monitors the intake manifold runner position sensor voltage, expecting a range typically between 0.5V (closed) and 4.5V (open). If the voltage signal is outside the acceptable range or doesn't change when it should, it triggers the code.
What a healthy reading looks like
Expected position sensor voltage should vary between 0.5V to 4.5V, with full closure typically around 0.5V and full opening around 4V to 4.5V.
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 any obvious wiring issues or damaged connectors in the intake manifold runner control circuit. Repair as needed. Decision: If repairs made, clear codes and retest.
- 2Test the intake manifold runner position sensor's voltage signal with a multimeter. Expect 0.5V at closed and around 4.5V at wide open. Decision: If voltage readings are out of range, replace the sensor.
- 3Inspect the intake manifold runner control valve for proper operation. Use a scanner to command the valve open and closed. Decision: If the valve doesn't operate correctly, replace it and retest.
- 4Look for vacuum leaks around the intake manifold that could affect performance. Use a smoke machine or spray soapy water to check for leaks. Decision: Repair any leaks found before moving on.
Common causes
- Stuck or faulty intake manifold runner control valve
- Wiring issues such as shorts or opens in the control circuit
- Defective throttle body or actuator
- Failed intake manifold runner position sensor
- Vacuum leak affecting intake pressure
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It’s generally safe to drive, but performance may be reduced, and fuel economy could be affected.
Will this code come back after clearing it?
If the underlying issue isn't fixed, the code will likely return.
Why does this code pair with others like P2004?
Multiple codes can indicate related issues in the intake manifold system, such as multiple runners or sensors failing.
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