Code P034062 Repair
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Joined: Apr 2017
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2012 C250 Sport
Code P034062 Repair
Hello everyone,
I'm dating a nice woman who owns a US-model 2012 C250 Sport with 84,000 miles.
The engine is the M271, a 4-cylinder 1.8L turbo.
The CEL is illuminated and the car started slowly and hesitated badly when accelerating. In the glovebox, I found an estimate from the dealer which stated:
From what I understand, if I pull the camshaft position sensors, I should be able to turn the engine into a certain position which will let me see some alignment marks through the openings, which should tell me if the camshafts are aligned properly. Is anyone familiar with this or other diagnostic procedures, beyond "the code says 34062, so replace a very expensive part"?
Also, if anyone knows where in the US I can rent some of the special service tools I will need for this work, I would appreciate that very much.
My sincere thanks in advance.
I'm dating a nice woman who owns a US-model 2012 C250 Sport with 84,000 miles.
The engine is the M271, a 4-cylinder 1.8L turbo.
The CEL is illuminated and the car started slowly and hesitated badly when accelerating. In the glovebox, I found an estimate from the dealer which stated:
Code P034062: Remedies regarding code were to replace intake cam adjuster and timing chain adjuster per PTSS cases. Repair estimate: $3,900. Customer declines.
Before I toss in one or two $800 camshaft adjusters and a new timing chain as a "guess" at the repair, is there any way to diagnose the error besides just the code?From what I understand, if I pull the camshaft position sensors, I should be able to turn the engine into a certain position which will let me see some alignment marks through the openings, which should tell me if the camshafts are aligned properly. Is anyone familiar with this or other diagnostic procedures, beyond "the code says 34062, so replace a very expensive part"?
Also, if anyone knows where in the US I can rent some of the special service tools I will need for this work, I would appreciate that very much.
My sincere thanks in advance.
Last edited by Marshall_c250; Apr 16, 2017 at 07:41 AM.
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2012 C250 Coupe
I am having the same issue, I found this video that sounds like what I am experiencing:
My 2012 C250 coupe has 67,000mi on it. I got the P0340 code and replaced both Camshaft Position Sensors with no luck. Sounds like it must be the camshaft adjuster
I hope we can figure this out. Bringing to dealership tomorrow morning, maybe they'll have an answer. Really upset that I don't have any warranty..
My 2012 C250 coupe has 67,000mi on it. I got the P0340 code and replaced both Camshaft Position Sensors with no luck. Sounds like it must be the camshaft adjuster
I hope we can figure this out. Bringing to dealership tomorrow morning, maybe they'll have an answer. Really upset that I don't have any warranty..
Super Member
Joined: Apr 2010
Posts: 705
Likes: 55
From: LA LA Land
'08 C300 MM Pano
I am having the same issue, I found this video that sounds like what I am experiencing:
https://www.youtube.com/watch?v=HhLEQ5914N4
My 2012 C250 coupe has 67,000mi on it. I got the P0340 code and replaced both Camshaft Position Sensors with no luck. Sounds like it must be the camshaft adjuster
I hope we can figure this out. Bringing to dealership tomorrow morning, maybe they'll have an answer. Really upset that I don't have any warranty..
https://www.youtube.com/watch?v=HhLEQ5914N4
My 2012 C250 coupe has 67,000mi on it. I got the P0340 code and replaced both Camshaft Position Sensors with no luck. Sounds like it must be the camshaft adjuster
I hope we can figure this out. Bringing to dealership tomorrow morning, maybe they'll have an answer. Really upset that I don't have any warranty..
Super Member
Joined: Aug 2016
Posts: 520
Likes: 45
From: Regina SK
2008 C-230 4Matic Sport
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Joined: Jul 2017
Posts: 3
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2012 C250 Coupe
Dropped it off at the dealer about an hour ago, will have a diagnosis soon.
Service desk said "sounds like a chain tensioner."
Will respond with invoice/parts/costs/etc. later.
Quick search tells me it's going to be between $950 - $3,400 depending if there are extenuating repairs to the timing chain or adjuster.
Service desk said "sounds like a chain tensioner."
Will respond with invoice/parts/costs/etc. later.
Quick search tells me it's going to be between $950 - $3,400 depending if there are extenuating repairs to the timing chain or adjuster.
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From: Canada
A car
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Newbie
Joined: Jul 2017
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2012 C250 Coupe
Dealer says:
Camshaft Adjusters are failing - $3,401.12
No other comments. Trying to find parts to see if I can take it to my regular shop, not having much luck. Looks like there are at least two of them, and they cost between $500-900 each anyway...
Camshaft Adjusters are failing - $3,401.12
No other comments. Trying to find parts to see if I can take it to my regular shop, not having much luck. Looks like there are at least two of them, and they cost between $500-900 each anyway...
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2013 C250 Sport
Super Member
Joined: Aug 2016
Posts: 520
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From: Regina SK
2008 C-230 4Matic Sport
Kind of why I assumed it was an older car issue at first but I guess still a problem. Mercedes obviously knows about this but kept using sub par components. Shame on them.
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2013 C250 Sport
It makes me concerned about my car. The repair I have now has more miles on it than the original cam adjusters. It looks like the class action was taken back in 2012 for the older cars. Perhaps back in MY 2013 the parts still had not been revised?
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