P2016
Intake Manifold Runner Position Sensor/Switch Circuit Low (Bank 1)
The IMRC position sensor signal on bank 1 reads below the lower limit. Usually a short to ground on the signal wire or a failed sensor.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Signal wire shorted to groundCommon
- Position sensor failed lowPossible
- Connector pins corroded - high contact resistanceLess likely
Parts involved
- IMRC Position Sensor
- IMRC Wiring
P2016 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.