P2004 — Intake Manifold Runner Control Stuck Open (Bank 1)

Intake swirl flap stuck open — extremely common on BMW N47, Audi 2.0 TDI, Merc OM646.

Bob's Mechanical Repairs — independent family-run garage in Birnam, Dunkeld, Perthshire. Call 01350 727 276 or email bob@bobsmechanicalrepairs.co.uk.