16787/P0403/001027

From Ross-Tech Wiki

16787/P0403/001027 - Exhaust Gas Recirculation (EGR) Valve (N18): Malfunction

Possible Symptoms

  • Malfunction Indicator Light (MIL) ON
  • Rough Idle Speed and/or Engine stalling
  • Loss of Power

Possible Causes

  • Fuse(s) faulty
  • Wiring and/or Connector(s) from/to Exhaust Gas Recirculation (EGR) Valve (N18) faulty
  • Exhaust Gas Recirculation (EGR) Valve (N18) stuck/faulty

Possible Solutions

  • Check Fuse(s)
  • Check Wiring and/or Connector(s) from/to Exhaust Gas Recirculation (EGR) Valve (N18)
  • Check/Replace Exhaust Gas Recirculation (EGR) Valve (N18)
    • Check Measuring Value Blocks (MVB)

Special Notes

  • On CR TDIs with fully electric (not vacuum operated) EGRs this DTC should be pointing you to EGR valve #1 at the intake manifold. The component identifier may be GX5.