From Ross-Tech Wiki

16403/P0019/000025 - Bank 2: CMP Sens 4 (G301) / Engine Speed Sensor (G28): Incorrect Correlation

Possible Symptoms

  • Malfunction Indicator Light (MIL) ON

Possible Causes

  • Timing Issue
  • Camshaft Adjuster

Possible Solutions

  • Check Setting of Timing Belt
  • Check Timing of Intake/Exhaust Cams
  • Check Cam Adjusters as per Repair Manual

Special Notes

  • When found in 2009 Audi A4, A5 or Q5 with 3.2FSI AVE Engines, please see TSB 15-09-04.