OBD-II reference

All 9.533 generic OBD-II codes, explained in detail.

Causes, inspection steps and sources — a comprehensive DIY archive. Created and maintained with love for the detail. Good luck and have fun!

Powertrain generic / SAE

P2023

Intake Manifold Runner Position Sensor/Switch Circuit Intermittent (Bank 2)

The IMRC position sensor signal on bank 2 jumps or drops out intermittently — usually a loose pin, partially-broken conductor, or moisture in the connector.

SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number– / 23

Possible causes

  • Loose terminal in connector high
  • Water ingress into connector medium
  • Connector with intermittent contact under vibration low

Inspection / repair

  • Difficulty: medium
  • DIY: possible
  • Estimated cost: 30–250 €
  • Estimated time: 0.5–1.5 h
  • Component: imrc position sensor
  • Component: imrc connector
  • MIL / check engine light
  • emissions-relevant

Sources

References

How to read OBD-II codes

The first letter names the vehicle system, the second digit distinguishes generic from manufacturer-specific, the remaining digits group fault area and number.

PPowertrain: engine, transmission, emissions
BBody: chassis trim, comfort, interior
CChassis: suspension, brakes, steering
UNetwork: CAN, control modules, communication