I have seen this with other cars. It goes into a semi limp mode. After it is fixed, it goes back to normal.

 

Just an update. Changing intake pressure sensors does not fix the issue. This only seems to be happening at really low temperatures. On a hot day it is fine.

 

Has this problem been resolved?

 

Mine has been. Just went back to stock. But I do know what exactly is happening though. I will do a write up on of this one of these days.

 

That would be great- thanks

 

 

Is there anyway we can scan for these codes without AMR doing it first? My coupe is brand new, it was built 10/18/17 so I believe I have all the updates. I’m considering getting a tune from AMR soon but want to make sure there’s no issues going into it.

 

 

 

 

Hi I'm having the same problem with my Eurocharged tuned C43 facelift.
Its happened twice, 2nd time after a new map was loaded.
Did yours completely go away after the ECU 'adapted' to the new map parameters?

 

Well guys, let me set this straight from my side of things. I had the Lorinser Module on my car which changed the car into a speed machine without any code except crack sensor but never put the car into limp mode.

Some how my PCM blow but I know how and it was nothing to do with the module. I took my car to Eurocharge with a New PCM installed and my old one in the trunk. I removed the Lorinser module and tuned the car and before I even got home, the car when into limp mode. Scared me as it never did this before.

Tool it back the Eurocharge and they had it for a couple days. I took it easy with the car and about 1 week, I put the car in sport and gunned it - Limp Mode. I reset it and brought it back to Eurocharge, retuned it.

Drove it around for 1-2 weeks, gunned it in Comfort = Limp Mode. Reset it, drove around, gunned it - Limp Mode in Comfort, Sport and always to Sport +. Why all the time in Sport +? Because it alway happened in sport + however in sports mode I noticed that the car downshift harder than normal. Kinda feels like it's skipping, like a huge jolt before it's stops while still in Sports. I also have the burble tune so not sure if that is part of that.

Anyways, the car is not fun any longer. I cant pass anyone as I'm scares it will loose all power as soon as I give it power. But if I drive normally - like I have been for the last month. It does not go into limp mode. Today after not driving it hard for a month - Limp Mode in Sport +.

I think it's time to go back to the Lorinser Module unless Eurocharge will do what they call, an exact run tune. Instead of a flash and drive away tune, they tune the car looking at the computer while on a dyno which is a more technical tune. Not sure if that will fix the problem but it's just not fun to tune the car and hit limp mode every time.
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i dont get a Cell but sometimes i diagnose my car with Carly and had the P140471 code;

the actuator is blocked

On the other side i was experiencing a little issue when full throttle it feels like the Rev Limiter cuts in like driving in manual mode....

this is i think less when PE is closed...

So can this be the problem with the actuator?

{did you feel diffence in power with the actuator that was faulty?} sorry amswer was in your post

 

How did yours resolve?

 

I think Jerry did number 2 for me.

 

I took it back to Eurocharge and those guys re-tuned it with a new tune and everything seems fine now; it's also smoother in every mode.

 

Same thing is happening to me with my eurocharged tune. About 5 times now it has put me in limp mode while going 95. Took it to the dealership twice and the most they could tell me was the car sucked air in through the exhaust. But the people from eurocharged don't think that's possible..? It has been months and I'm still trying to figure out what the problem is. I've tried 6 different tunes from them and they all do it. Have you given up or were you able to find a fix?

 

Have you tuned back to stock and see if the fault still arises?

That should be an easy way to determine what’s wrong.

 

Yes it doesn't do it when stock. Only when the tune is on.

 

That is indeed strange. Perhaps your car is unique or different in some way, software or hardware version, that is causing it. There are countless others on Eurocharged tune without this issue, and there are one or two with the same problem. Some of them have been solved, maybe they can help. What year is your car?

 

Yeah it could just be a unique car. Frustrating though. And yeah I am honestly asking anyone I can find who remotely has this problem. I have a huge thread between Jerry and I on trying to figure it out. And my c43 is a 2019.

 

Hello guys, I had 2020 c43 for around 2 months now I got the car with 25km and I got it as certified pre owned Within the first week I had the car staged 1 by MB house in Toronto. The car now produced around 460hp with 665nm of torque. Within the first week on the highway everytime I finish work it will go into limp mode happened 5 times. After taking back to mb house they will decrease the torque and play with the tune but issue still happened. Then they took it for a couple days so they could log it and test and they said that air pressure was off in the engine due to a air leak and had to replace the 12 plastic seals for the engine. Which was expensive btw. The issue did not happen for 2 weeks (the longest) then it suddenly happened on the highway again. This issue definitely seems like tune issue.

 

Welcome to the forums and the car, hmmm, sounds like an mbhouse issue though, they need to fix it.

 

Hey guys, I know that most of the problems in this topic are about the car after stage.
But I have a problem with my C43, where I've had the car in the garage for 6 months. The car was working fine, and right after changing the battery, the big problem started.
It loses communication between the transmission and the computer. Sometimes the car loses power and now it won't even start. The mechanic who has my car has supposedly tried everything he could, changed modules, checked the car's wiring harness and everything else.
I believe that because of the time the car has been stopped, either he's not a good mechanic in MB or he doesn't have the right computer/tools to solve these types of cars. Has anyone had something similar or have any idea how to solve this type of problem?

 

That is strange, what battery did you replace it with? What brand what size, what model?