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W205 Turbo issues

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Old Jan 23, 2023 | 07:41 AM
  #1  
tuga's Avatar
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Default W205 Turbo issues

Hello everyone,

My 2016 w205 seems to have a turbo issue as under harder acceleration it loses some power and I have to let off the gas and then accelerate slower to get it to go properly. I find it happens mostly under hard acceleration merging onto the highway or while passing others. It has never gone into limp mode but maybe because I keep letting off the gas when it happens.

I put the scanner on it and I get the P029921 code "The boost pressure of the turbocharger 1 is too low. The signal amplitude is less than the minimum amplitude".

I have read lots about turbo hose leaks, diverter valves going bad, wastegate actuator stuck, etc as being the most likely culprits, but given that I can still drive the car normally and only under hard acceleration I'm experiencing the turbo loss, is there somewhere/or some item that I should be starting with (more likely to be the issue) when I'm starting to attempt to repair this issue?

Thanks in advance for any help.
 
Old Feb 15, 2023 | 03:10 AM
  #2  
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Did you resolve your problem. I have similar situation.
Regards
 
Old Feb 15, 2023 | 05:03 AM
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Same here. I am tired of the W205 Turbo issue and I am trying to find a proper solution online so that I can rid of this issue forever. I hope someone will reply to my answer. I am waiting for your reply and till then I will read reviews on this Twitter https://twitter.com/papers_owl_com link on papersowl. I want to hire an essay writer because I got a lot of essay assignments and I can't complete them in the given time on my own.
 

Last edited by NathanPeebody; Feb 27, 2023 at 02:16 AM.
Old Apr 25, 2023 | 04:42 PM
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Did you figure it out? I can't pass smog please help
 
Old Apr 25, 2023 | 04:42 PM
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Did you figure it out? I can't pass smog please help
 
Old Aug 26, 2023 | 03:18 AM
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Did you manage to get a solution to the problem tuga? I am currently experiencing the same issues.
 
Old Apr 15, 2024 | 10:59 AM
  #7  
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Originally Posted by tuga
Hello everyone,

My 2016 w205 seems to have a turbo issue as under harder acceleration it loses some power and I have to let off the gas and then accelerate slower to get it to go properly. I find it happens mostly under hard acceleration merging onto the highway or while passing others. It has never gone into limp mode but maybe because I keep letting off the gas when it happens.

I put the scanner on it and I get the P029921 code "The boost pressure of the turbocharger 1 is too low. The signal amplitude is less than the minimum amplitude".

I have read lots about turbo hose leaks, diverter valves going bad, wastegate actuator stuck, etc as being the most likely culprits, but given that I can still drive the car normally and only under hard acceleration I'm experiencing the turbo loss, is there somewhere/or some item that I should be starting with (more likely to be the issue) when I'm starting to attempt to repair this issue?

Thanks in advance for any help.
I have a similar issue I changed the diverted valve the error went away but I still get no boost especially in steep hills the car won't boost. Anyone figured out what the issue might be. I have a 2015 c180 w205
 
Old May 1, 2024 | 02:53 PM
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