P2021 OBD II Trouble Code Intake Manifold Runner Position Sensor / Switch Circuit Low Bank 2

Symptoms of P2021 OBD II Trouble Code

  • Malfunction Indicator Lamp (MIL) illuminated
  • Lack of power
  • Poor fuel economy

Common Causes of P2021 OBD II Trouble Code

  • Faulty IMRC actuator relay (if equipped) bank 2
  • Faulty IMRC actuator/sensor bank 2
  • Rarely - faulty Powertrain Control Module (PCM) (programming required after replacement)