Jul 29, 2015 · This has the same but it also has a vacuum solenoid (N548 Crankcase ventilation shut-off valve) in between. If I initiate an output test with VCDS and with my vacuum pump on it, it will hold vacuum, my gauge doesn't even budge.

Nov 7, 2023 · When the engine light comes on with the code P052E, it means there’s something wrong with a part of the engine that controls the ‘breathing’ of the engine – the PCV system. This system helps get rid of harmful gases inside the engine and keeps it running clean.

Aug 22, 2019 · My 3.0TFSI (Supercharged) engine has a high level of vacuum in the crankcase. This is noticeable when you remove the oil cap as it is difficult to remove whilst the engine is running. It requires a force of about 2 to 4 lbs to open it.

Jun 6, 2016 · Apparently it's the "N548 Crankcase ventilation shut-off valve". I assume then testing this solenoid is what output test IDE07892 is for? And failure of this control is what P052E is identifying?

Aug 28, 2021 · If the O2 system is seeing high hydrocarbon during idle, the ECM can activate the N548 crankcase vent breather shut-off valve. This can meter the volume of fresh air permitted into the crankcase, assisting idle.

So we dropped our 2012 A6 with 70k miles at the dealer who after a few hours called to explain that the diagnosis was a flawed "oil Separator", the bill will be $1,600! Ouch, should have bought the extended warranty.

Nov 15, 2018 · My 2014 SQ5 is in the shop right now for its 65k mile maintenance and they pulled a fault for intermittent PCV shut off valve N548. In my case it never set of a MIL but I wonder if it is the same valve.

Jul 22, 2020 · P052E: Positive Crankcase Ventilation Regulator Valve Performance. ... light on and code 20136 (P052E)- Positive Crankcase Ventilation Regulator Valve Performance. With engine running,found excessive vacuum trying to remove oil filler cap. Tested the N548 valve (crankcase ventilation shut off valve)for proper operation and...

Mar 28, 2018 · If you have an Audi S4, S5, A6 or SQ5 with a 3.0t Supercharged engine, check out this article for a few common problems to look out for.

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