Intake Manifold Runner Position Sensor/Switch Circuit Range/Performance (Bank 2)
The P2021 code means the vehicle's onboard diagnostic system has detected: Intake Manifold Runner Position Sensor/Switch Circuit Range/Performance (Bank 2). This is a moderate severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- moderate
- Estimated cost
- $100 - $400 (parts and labor)
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Common Symptoms
- Check Engine Light illuminated
- Erratic engine power
- Fluctuating idle speed
- Hesitation or stumble on acceleration
- Minor increase in fuel usage
Probable Causes (Ranked by Likelihood)
- Worn or sticking Bank 2 runner position sensor Very High
- Carbon buildup on Bank 2 runner flaps High
- Intermittent wiring connection Moderate
- Damaged sensor connector Moderate
- PCM calibration issue Low
Step-by-Step Diagnostic Procedure
-
Confirm P2021 and review freeze frame data
-
Monitor Bank 2 runner position sensor in real-time via scan tool
-
Clean or inspect runner flaps for carbon buildup or binding
-
Wiggle-test wiring while monitoring sensor output
Frequently Asked Questions
What does P2021 mean?
P2021 means the Bank 2 intake manifold runner position sensor is reporting values outside the expected operating range, often from sensor wear or carbon-restricted runners.
Can I drive with a P2021 code?
Short-distance driving is safe. You may notice intermittent performance issues due to inconsistent sensor readings.
How much does it cost to fix P2021?
Expect $100 to $400 for repairs, with cleaning being cheaper and sensor or manifold replacement being more expensive.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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