How to clean your Audi A6 EGR valve: Identifying faults. The EGR valve, even though very important to limit the pollution emissions of your Audi A6 , will regrettably tend to clog up because of soot/gas deposits that will build up in its mechanism, which will inevitably risk blocking the operation of the valve, until entirely blocking the engine unit, here are the symptoms that a defective EGR 3. Loosen the bolts to remove the EGR valve and gasket. 4. Check the hoses and gasket for wear, to replace or reuse. 5. Spray the valve and hoses with carburetor cleaner, using a brush to clean off the carbon buildup out of any hoses and small hole with the pintle. Hello everyone, i recently got myself an A6 C7 3.0 BiTDI 2012. with 220K km on it. The car was checked by an official dealership prior to purchase, everything went smooth, the only problem was the coolant was leaking, and i had to change some sort of a thermostat down between the heads. Also got the p0401 code pop up from time to time, I wonder if a EGR valve clean would help (I can't get the damn thing off myself), or just replace the entire EGR cooler/valve unit. Can get a new EGR cooler (incl valve) for €325/£285, looks like a pretty big job to swap it (thinking like 8 hours or so) Part No SW: 03L 906 022 LC HW: 03L 906 022 G. Component: R4 2,0L EDC G000SG 4623. Revision: 13H02--- Serial number: Coding: 0001072. Shop #: WSC 00349 210 88197. VCID: 71EE0E8668325AC222-8024. 1 Fault Found. 001027 - EGR Valve (N18) P0403 - 000 - Malfunction - Intermittent. Posted November 3. Hi, new to audi ownership just purchased a A4 allroad a few months the ago, 2014. Was a great car up until a few weeks ago, we've now had a falling out! Went in for interim service, following just oil change and service reset car would not then start - garage eventually tracked down a faulty EGR valve and replaced, now dpf 3.0 liter / 2.7 liter TDI: sporadic malfunctions of the engine permits the publication date: 10-08-2009. Problem Description Client / Conclusion station. The warning lamp lights up the engine and / or the engine stalls. Errors in the engine control unit: P0200 (nozzle - an electrical fault in the circuit) or. Audi Forums A6 Series. A6/S6/Allroad forum (C7 Chassis) . DeanoC Well-Known Member EGR solenoid valve location. X30; Jan 15, 2017; Replies 1 Views 666. .

audi a6 c7 egr valve location