2020年11月15日 · In Layman’s terms, the N249 is a valve solenoid that is connected to the intake vacuum source to the back of the diverter valve (DV) and it controls the boost signal to the DV …

2022年8月1日 · Watch this video, it is a very common thing for these "Turbocharger Recirculation Valve N249" or also called "Diverter Valves" to brake and store the code "P0299". In this video I'll give you a...

2015年6月30日 · But like I said... the N249 is one of the ECU's protection systems for the engine... it allows the ECU to dump boost if it detects a problem... the fact you had the code at all suggests the ECU was trying to dump boost... the fault code is normally the result of the boost not dropping quickly enough so the ECU assumes the N249 is not operating ...

2004年8月12日 · I ran my recently purchased RossTech diagnostic tester on my 2001 TT and got one error: 17608 Boost Pressure Control Valve (N249) mechanical malfunction. N249 turns out to be the recirculation control valve for the turbo. I located it but according to the workshop manual from Bentleys Publishers I need special tools for testing.

2010年5月15日 · Had a bunch of codes, including N249, boost pressure not reached, and cylinder misfires. Replaced the DV which didn't seem to help and the Wastegate Actuator which fixed the noise and boost leak, but still getting this one fault code.

2017年2月5日 · In the manual N249 is called 'Turbocharger air recirculation valve' When you lift off the throttle it opens to relieve the air pressure in the inlet tract. That excess air is returned to the air inlet side of the turbo thus keeping the turbo spinning and giving a faster response when you reapply throttle.

2004年5月14日 · It seems, the N249 is just a simple two way solenoid valve that can connect the BPVs directly to either the manifold (vacuum/pressure), or to the vacuum reservoir (hard vacuum) with no in-between.

2012年5月14日 · Audi service centre has told me that there is a 'stored fault' when they hooked it up to their diagnostic machine. The fault is with the air recirculation valve n249, the technician said it's probably torn and needs replacing.

2013年12月27日 · N249 helps smooth things out when driver changes loads e.g. letting off a little 90% pedal to 80% pedal. The car responses faster to driver's request with the aid of the N249.

2009年2月15日 · The N249 valve has part number 078 906 283 A and is the solenoid valve which diverts either low pressure air from the vacuum reservoir or intake (ambient) air to the mechanical dump valve (06A 145 710 N, often replaced with Forge 007p aftermarket unit) to actuate it.