Powertrain
Definition only
Lights the check engine lamp
P2021: Intake Manifold Runner Position Sensor/Switch Circuit High (Bank 2)
Standardized SAE J2012 code · P20xx — Fuel & air metering and auxiliary emission controls
What does P2021 mean?
The IMRC position sensor on bank 2 reports a voltage above the upper threshold — usually a short to positive or an open ground.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Common causes
- High Signal shorted to positive
- Medium Sensor ground open
- Low Connector pins corroded - high contact resistance
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P2021 on the same make and model first.
P2021 in the community
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