OBD-II code · Powertrain (generic, extended)
P2020 Intake Manifold Runner Position Sensor/Switch Circuit Low (Bank 2)
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.
Is it safe to drive with P2020?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySignal shorted to ground
- PossibleSensor element shorted
- Less likelyConnector pins corroded - high contact resistance
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Imrc Position Sensor B2, Imrc Wiring
Related codes
- P2016Intake Manifold Runner Position Sensor/Switch Circuit Low (Bank 1)
- P2018Intake Manifold Runner Position Sensor/Switch Circuit Open (Bank 2)
- P201DIntake Manifold Runner Control Actuator Internal Performance (Bank 1)
- P201EIntake Manifold Runner Control Actuator Internal Performance (Bank 2)
- P201FReductant Pump A Stuck On
- P2021Intake Manifold Runner Position Sensor/Switch Circuit High (Bank 2)
- P2022Intake Manifold Runner Position Sensor/Switch Circuit High (Bank 2)
- P2023Intake Manifold Runner Position Sensor/Switch Circuit Intermittent (Bank 2)
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.