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OBD-II · Engine and powertrain (P)

P2019

Intake runner (swirl) flap position sensor circuit bank 2

What it means

Intake manifold runner flaps - called swirl flaps on diesels - change how air enters the cylinders at low rpm. The bank 2 position sensor circuit has an electrical fault (identify bank 2 using the engine-specific service information).

Symptoms

  • engine warning light
  • often no noticeable change

Likely causes, most likely first

Likely causes, most likely first
No.Cause
01failed position sensor
02wiring or connector fault
035 V reference fault

What to check, step by step

  1. 01Read flap position in live data while running the actuator test.
  2. 02Inspect the position sensor connector and wiring.
  3. 03Check the 5 V reference, ground and signal.
  4. 04Check the linkage between actuator and flap shaft is intact.
  5. 05Replace the sensor/actuator or manifold as required.