Access our free Vacuum Diagrams Repair Guide for Audi Cars 1999-05 through AutoZone Rewards. These diagrams include: Fig. Audi A4 2.8L Vacuum Diagram. Fig. Audi A4 2.7L Vacuum Diagram. Fig. Audi A4 1.8L Vacuum Diagram. Fig. VW Passat 1.9L Vacuum Diagram. Fig. VW Passat 2.8L Vacuum connections (top view) If it was in an easy place I'd suggest to clean it first I think, but its going to be 200-250 for the replacement. I could be paying around £250 for something that may not work and have to pay the £750 anyway. Reading reports of when people's egr failed after having the emissions "fix" they'd been quoted £1200-£1500 for a replacement by EML light came on and subsequent diagnosis was the EGR valve wasn't working. So the garage replaced the valve and reset light. Day later light back on. They have checked the valve is opening and closing properly and reset the the light. But it keeps coming back on and the diagnostics report EGR valve. They are now stumped and I'm cheesed off. Tags : 1.9 TDI, 2.0 TDI, 2.5 TDI, 2.7 TDI, 3.0 TDI, 4.2 TDI, 5.0 TDI etc. Exhaust Gas Recirculation Valve (EGR) problems, Alfa Romeo Exhaust Gas Recirculation Valve (EGR) problems fixed, Audi - 1.4 TDI, Blocked EGR, Blocked EGR Valve, Blocked EGR Valve - Our EGR De-Activation Solution, Blocked EGR Valve - Our EGR Removal Solution, Blocked EGR Valve System - Our EGR Delete Solution, BMW & Mini Unscrew the two screws coming into the bottom of the EGR (holding a metal pipe). 6. Unbolt the metal pipe where it connects to the engine and remove. 7. Remove the three bolts which hold the EGR onto the inlet manifold. 8. Unclip the pipe into the EGR. 9. After changing everything trying to chase secondary air codes, I want to remove the combi valves and clean these out. I bought a second hand 2004 allroad 2.7t and I cannot get my registration for it until I get the emissions test past here in Colorado. On a Volkswagen, Audi Seat or Skoda vehicle the fault code your likely to see with a fault relating to an EGR valve is 16785 rather than P0104 Exhaust Gas Recirculation Insufficient. This fault code is telling us that the engine ECU has detected the flow of exhaust gases through the valve is too low. Engines covered in our 1999 Audi A6 repair manuals: 4-Cyl. TDI® engine, Mechanics AJM AVF AWX 4-Cylinder engine (5-valve), Mechanics AJP 4-cyl. Vay Tiền Cấp Tốc Online Cmnd.

audi a6 egr valve location