P2020: Intake Manifold Runner Position Sensor/Switch Circuit Low (Bank 2)
Standardized SAE J2012 code · P20xx — Fuel & air metering and auxiliary emission controls
What does P2020 mean?
The IMRC position sensor on bank 2 reports a voltage below the lower threshold — typically a short to ground or a sensor with very low resistance.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Common causes
- High Signal shorted to ground
- Medium Sensor element shorted
- Low Connector pins corroded - high contact resistance
Likelihood is a general estimate across vehicles; your make and model may differ.
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P2020 in the community
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