P1CE8 CEL
Super Member
Joined: Dec 2010
Posts: 771
Likes: 634
From: Long Island ny
2007 e350 sport. 2010 350 4matic sport. Worlds first W212 E63R self built.
Interesting, it’s probably one of those things where just clear the CEL move on till it comes up again. Intakes perform fantastically so I guess I’d sacrifice it but for the price point you’d think there would be no issue. I’m currently tuned with DME maybe could be another reason but not sure.
but unfortunately it's not just as simple as clearing it in my
op . I tried that and it damaged my pvc unit and caused oil to
dunp into my intake . To much crank case pressure will
blow seals out because of blow by. So I personally had to fix the problem and come up with a solution
Member
Joined: Sep 2021
Posts: 158
Likes: 7
From: In front of you
2014 W212 E63 AMG S model
but unfortunately it's not just as simple as clearing it in my
op . I tried that and it damaged my pvc unit and caused oil to
dunp into my intake . To much crank case pressure will
blow seals out because of blow by. So I personally had to fix the problem and come up with a solution
op . I tried that and it damaged my pvc unit and caused oil to
dunp into my intake . To much crank case pressure will
blow seals out because of blow by. So I personally had to fix the problem and come up with a solution
oh wow, so that code the part was throwing ended up actually being bad?
Super Member
Joined: Dec 2010
Posts: 771
Likes: 634
From: Long Island ny
2007 e350 sport. 2010 350 4matic sport. Worlds first W212 E63R self built.
Yes it ended up failing and the check valve/door that opens and closes from vaccum and pressure no longer functioned because of the oil build up. The pcv hose has to be fabricated lower down closer to the compressor wheel in order to maintain a high enough vacuum during WOT that the pcv starts functioning. In the coming days I will start a thread on the intakes I have been working on and in there people can use what I did on my new intakes design and utilize it on these so that it works perfectly for anyone that's in need .
Newbie
Joined: Mar 2016
Posts: 9
Likes: 1
From: Sweden
Mercedes Benz C63 AMG -11
My friend has the same codes in his C63s with ZAC intakes. The car has an issue now, it cuts all power on WOT. It sets both this codes and Quantity control valve bank 2 - short circuit to positive. Can the Crankcase ventilation codes make the car cut all power on WOT? Or is it maybe the quantity control valve on bank 2 hpfp doing this... It is tuned with bigger turbos and spool performance fuelpumps.
Senior Member
Joined: Jul 2018
Posts: 456
Likes: 151
E63s
My friend has the same codes in his C63s with ZAC intakes. The car has an issue now, it cuts all power on WOT. It sets both this codes and Quantity control valve bank 2 - short circuit to positive. Can the Crankcase ventilation codes make the car cut all power on WOT? Or is it maybe the quantity control valve on bank 2 hpfp doing this... It is tuned with bigger turbos and spool performance fuelpumps.
What I would do is disconnect the sensors from the back of the engine and run it without them and see if that fixes it
MB World Stories
The Best of Mercedes & AMG
Dubai Tuner Gives the Mercedes G-Class An Entirely New Look
Verdad Gallardo
Six Gift Ideas Your AMG Loving Dad or Grad Will Cherish
7 Craziest Things AMG Gas Ever Built
Verdad Gallardo
New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know
Verdad Gallardo
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)
Verdad Gallardo
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Newbie
Joined: Nov 2023
Posts: 5
Likes: 0
2019 GLC 63 amg
i figured this problem out a while back . I tried telling and informing people but unfortunately even after all the accurate information I've shared there's always that doubt lol . The issue is the pcv system is not seeing the same vaccum as before. The reason is the filter on the bb is now the easiest source of air woth least resistance. The pvc system has a check valve that operates during wide open throttle and because it's no longer seeing the same vac it won't open. This cause a bunch of issues .excessive pressure in the crank case. Dumps oil into your intake through the small hose in the back because the pressure is forced to escape that way bringing a bunch of oil. I bet anyone who has that code or atleast most will have a wet intake manifold inside coated with oil. I have been designing new high flow intakes for the past 2 years out of request for a friend that turned into a legit system that will Eliminate any code issue.
Brother please help me out, having those bank 1/2 crank case ventilation code and car losses power, my car has Zac’s intakes. Idk what’s up
Member
Joined: Jan 2024
Posts: 209
Likes: 67
From: Colorado
2018 C63S AMG Coupe, 2019 Jaguar F-Pace SVR
Also curious about a solution. I have a Zac Intake and the same Bank 1 / 2 codes for crankcase ventilation at WOT. Is there a way to re-route any of the vacuum lines under the couplers at the turbos to get the vacuum back up?
Member
Joined: Jan 2024
Posts: 209
Likes: 67
From: Colorado
2018 C63S AMG Coupe, 2019 Jaguar F-Pace SVR
I emailed Zac Motorsport and Greg told me to drill a hole in the end of the air filters and insert the MAP sensors in the end of each air filter. It was an easy mod, but I haven't been able to test whether the code re-appears or not because it's been snowing. Greg also mentioned making sure that the couplers (intake tubes to turbos) was seated all the way down onto the PCV blocks beneath them. I took mine off and re-installed them, but used a little grey silicon (automotive) to try and ensure a seal. Greg mentioned the same thing as other posts on this topic in that under WOT the check valve switches the PCV vacuum to be sourced from the little blocks I just referenced in the couplers, right in front of the turbos. Under normal driving though, the PCV vacuum is sourced from the intake near the throttle bodies. So the problem is like others have said.... the larger intakes / increased flow of the aftermarket intakes reduces the PCV vacuum.
Member
Joined: Jan 2024
Posts: 209
Likes: 67
From: Colorado
2018 C63S AMG Coupe, 2019 Jaguar F-Pace SVR
Got to take the car out for a spin today, only about 15 miles or so. No codes related to the P1CE8 after putting the sensors in the ends of the air filters in my ZAC intake. So far so good. Guess they needed to see that pressure differential to be happy versus being in the open air of the engine compartment.
Newbie
Joined: Jul 2025
Posts: 1
Likes: 0
I emailed Zac Motorsport and Greg told me to drill a hole in the end of the air filters and insert the MAP sensors in the end of each air filter. It was an easy mod, but I haven't been able to test whether the code re-appears or not because it's been snowing. Greg also mentioned making sure that the couplers (intake tubes to turbos) was seated all the way down onto the PCV blocks beneath them. I took mine off and re-installed them, but used a little grey silicon (automotive) to try and ensure a seal. Greg mentioned the same thing as other posts on this topic in that under WOT the check valve switches the PCV vacuum to be sourced from the little blocks I just referenced in the couplers, right in front of the turbos. Under normal driving though, the PCV vacuum is sourced from the intake near the throttle bodies. So the problem is like others have said.... the larger intakes / increased flow of the aftermarket intakes reduces the PCV vacuum.
