Just bought a C63 AMG - One day later CEL came up. Help.
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2009 C63 AMG Stock
Just bought a C63 AMG - One day later CEL came up. Help.
Hey guys,
I just got a 2009 C63 AMG with around 35K miles. The car seems to be in great condition. The car needs service A, but I knew that going into the deal, the seller agreed to pay for anything else that was discovered during service A that was beyond the usual amount for Service A ($350), and I trust the seller.
What was disappointing is that after 1 day of driving I got the Engine Malfunction yellow light on the dash. I retrieved the codes and they are: P0171, P0745 and P2091 (see attached screenshot).
The last 2 are not marked as "Current Fault" by the Torque Pro app, so I'm not sure what it means. Screenshot attached.
The seller gave me all service records for the car and I don't think he ever changed the intake manifold gasket, which is commonly associated with P0171.
Does anyone have any advice? I'm really loving the car, it's driving very well and I hope this is not a huge issue.
Thanks.
I just got a 2009 C63 AMG with around 35K miles. The car seems to be in great condition. The car needs service A, but I knew that going into the deal, the seller agreed to pay for anything else that was discovered during service A that was beyond the usual amount for Service A ($350), and I trust the seller.
What was disappointing is that after 1 day of driving I got the Engine Malfunction yellow light on the dash. I retrieved the codes and they are: P0171, P0745 and P2091 (see attached screenshot).
The last 2 are not marked as "Current Fault" by the Torque Pro app, so I'm not sure what it means. Screenshot attached.
The seller gave me all service records for the car and I don't think he ever changed the intake manifold gasket, which is commonly associated with P0171.
Does anyone have any advice? I'm really loving the car, it's driving very well and I hope this is not a huge issue.
Thanks.
Last edited by sAMGih; Apr 20, 2014 at 04:21 PM.
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Joined: Mar 2006
Posts: 4,278
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From: San Jose area
'19 E63S sedan
Hey guys,
I just got a 2009 C63 AMG with around 35K miles. The car seems to be in great condition. The car needs service A as well, but I knew that going into the deal, the seller agreed to pay for anything else that was discovered during service A that was beyond the usual amount for Service A ($350), and I trust the seller.
What was disappointing is that after 1 day of driving I got the Engine Malfunction yellow light on the dash. I retrieved the codes and they are: P0171, P0745 and P2091 (see attached screenshot).
The last 2 are not marked as "Current Fault" by the Torque Pro app, so I'm not sure what it means. Screenshot attached.
The seller gave me all service records for the car and I don't think he ever changed the intake manifold gasket, which is commonly associated with P0171.
Does anyone have any advice? I'm really loving the car, it's driving very well and I hope this is not a huge issue.
Thanks.
I just got a 2009 C63 AMG with around 35K miles. The car seems to be in great condition. The car needs service A as well, but I knew that going into the deal, the seller agreed to pay for anything else that was discovered during service A that was beyond the usual amount for Service A ($350), and I trust the seller.
What was disappointing is that after 1 day of driving I got the Engine Malfunction yellow light on the dash. I retrieved the codes and they are: P0171, P0745 and P2091 (see attached screenshot).
The last 2 are not marked as "Current Fault" by the Torque Pro app, so I'm not sure what it means. Screenshot attached.
The seller gave me all service records for the car and I don't think he ever changed the intake manifold gasket, which is commonly associated with P0171.
Does anyone have any advice? I'm really loving the car, it's driving very well and I hope this is not a huge issue.
Thanks.
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From: Desert
02 CLK 55 AMG,09 C63 loaded with P30
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2009 C63 AMG Stock
Now that you mentioned this, I've read about the head bolt problem... Apparently it takes 3~4 weeks for a dealer to fix it and it costs something around $6K. I don't think this is related but oh man, what have I got myself into.
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2015 C63S AMG
Don't stress out about the headbolts. In my opinion it is a very rare occurrence but it has been blown out of proportion on the forums. The check engine light is typically emissions related so there are a lot of minor things that it could be... I've had my 09 for over two years now and it is by far the best car that I have owned!
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Joined: Feb 2012
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From: Sacramento, CA
'09 C63
Side note: I feel like leaky intake manifolds become more apparent (CEL codes pop up more frequently) with charcoal deletes and/or aftermarket filters. Since I had my gasket replaced, my high-flow filters never gave me a CEL, whereas before it will pop up every once in a while. Can anyone confirm this?
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S550 on order
it's not the intake manifold, i highly doubt it, CEL never even came on when I needed my intake manifold replaced, purge valve needed replaced - Again no CEL and it was stuck open, O2 sensors - again no CEL but needed replaced, and my car STILL runs lean bank 1&2, no one on this forum or at MB has a clue why, i even put my car back to 100% stock, CEL came on, so these cars can have a CEL come on for 0 reason infact, i've given up on trying to get rid of the lean code..screw it lol ..car runs fine anyways
moral of the story OP, never trust a computer, they lie sometimes
moral of the story OP, never trust a computer, they lie sometimes
Last edited by avery.whss; Apr 20, 2014 at 08:23 PM.
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From: Edmonton
2010 C63 AMG FBO, 2014 E63 AMG S
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'12 C63 Black Series, '12 ML350 BlueTech
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From: Toronto, ON
2009 C63 AMG
What else could I do?
Thanks.
Last edited by gmurad; Apr 21, 2014 at 07:20 AM.
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From: Ashburn, VA
C63 ///AMG P30
Correct. Use a MAF or throttle body spray to identify leaks if any.
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Joined: Apr 2014
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From: Toronto, ON
2009 C63 AMG
Hey guys,
According to the shop that I took the car to, the problem is either an intake gasket leaking or less likely it could need an entire new manifold.
The shop will first try fix the intake gasket leak ($423.44 including parts and service) and if that doesn't fix it she said it would need an entire new manifold.
Does this diagnostic seem sane? The original problem was a CEL (P0171 - System is running too lean).
According to the shop that I took the car to, the problem is either an intake gasket leaking or less likely it could need an entire new manifold.
The shop will first try fix the intake gasket leak ($423.44 including parts and service) and if that doesn't fix it she said it would need an entire new manifold.
Does this diagnostic seem sane? The original problem was a CEL (P0171 - System is running too lean).
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Joined: Jun 2013
Posts: 1,317
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S550 on order
Hey guys,
According to the shop that I took the car to, the problem is either an intake gasket leaking or less likely it could need an entire new manifold.
The shop will first try fix the intake gasket leak ($423.44 including parts and service) and if that doesn't fix it she said it would need an entire new manifold.
Does this diagnostic seem sane? The original problem was a CEL (P0171 - System is running too lean).
According to the shop that I took the car to, the problem is either an intake gasket leaking or less likely it could need an entire new manifold.
The shop will first try fix the intake gasket leak ($423.44 including parts and service) and if that doesn't fix it she said it would need an entire new manifold.
Does this diagnostic seem sane? The original problem was a CEL (P0171 - System is running too lean).
i replaced everything the MB techs told me to when I got that code (still have it) .. 6 months later here I am, still running lean, so screw it, car wants to run lean let it ..I've prob spent 7k (intake manifold, purge valve, A/F sensors) on trying to figure out the problem..all I'm saying is, don't be surprised if MB comes back saying they have no idea whats wrong after they replace everything that could cause it, because it happen to me..I'm guessing you're bone stock? I put mine back to bone stock and they still didn't know what was wrong,To be honest I don't trust a CEL period, it's triggered by some retarded computer that sees 1 thing off and fires out the code, my intake manifold whistled like crazy and it never once flashed CEL but it flashes CEL over a lose gas cap? Lol..Gas cap is like $50, intake manifold is $5k here in canada
Last edited by avery.whss; Apr 23, 2014 at 12:14 PM.
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W204 C63 Coupe, W166 ML350 BlueTEC, 928GT, Taycan GTS Sport Turismo, C5 Z06 & IS300 race cars
Hey guys,
According to the shop that I took the car to, the problem is either an intake gasket leaking or less likely it could need an entire new manifold.
The shop will first try fix the intake gasket leak ($423.44 including parts and service) and if that doesn't fix it she said it would need an entire new manifold.
Does this diagnostic seem sane? The original problem was a CEL (P0171 - System is running too lean).
According to the shop that I took the car to, the problem is either an intake gasket leaking or less likely it could need an entire new manifold.
The shop will first try fix the intake gasket leak ($423.44 including parts and service) and if that doesn't fix it she said it would need an entire new manifold.
Does this diagnostic seem sane? The original problem was a CEL (P0171 - System is running too lean).
Super Member
Joined: Dec 2012
Posts: 601
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From: Bay Area
2010 C63 P31 AMG
had that code and P2179. Intake manifold gasket replaced and now they are replacing upstream (driver side) o2 sensor because it wasnt reacting as fast as it should under normal cycle. Hopefully this will fix my issue.
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Joined: Sep 2013
Posts: 1,673
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From: Pittsburgh
C63 AMG
Hey guys,
According to the shop that I took the car to, the problem is either an intake gasket leaking or less likely it could need an entire new manifold.
The shop will first try fix the intake gasket leak ($423.44 including parts and service) and if that doesn't fix it she said it would need an entire new manifold.
Does this diagnostic seem sane? The original problem was a CEL (P0171 - System is running too lean).
According to the shop that I took the car to, the problem is either an intake gasket leaking or less likely it could need an entire new manifold.
The shop will first try fix the intake gasket leak ($423.44 including parts and service) and if that doesn't fix it she said it would need an entire new manifold.
Does this diagnostic seem sane? The original problem was a CEL (P0171 - System is running too lean).
MBWorld Fanatic!
Joined: Oct 2007
Posts: 2,299
Likes: 380
From: Texas
10 C six trizzle
i replaced everything the MB techs told me to when I got that code (still have it) .. 6 months later here I am, still running lean, so screw it, car wants to run lean let it ..I've prob spent 7k (intake manifold, purge valve, A/F sensors) on trying to figure out the problem..all I'm saying is, don't be surprised if MB comes back saying they have no idea whats wrong after they replace everything that could cause it, because it happen to me..I'm guessing you're bone stock? I put mine back to bone stock and they still didn't know what was wrong,To be honest I don't trust a CEL period, it's triggered by some retarded computer that sees 1 thing off and fires out the code, my intake manifold whistled like crazy and it never once flashed CEL but it flashes CEL over a lose gas cap? Lol..Gas cap is like $50, intake manifold is $5k here in canada
not trusting CEL lol, come on man. You'll kill your cats, spark plugs, possibly the cylinder walls/rings - wash them down with extra fuel.
Saying a lean code has one official cause is very vague. Yes in most cases on the m156 it's intake gaskets. Lean codes occur whenever oxygen sensors - see the name OXYGEN - read too much oxygen. It has nothing to do with detecting the amount of fuel at all. The reading is strictly measuring oxygen content. If you have a misifre (poor ignition/burn) unburnt fuel and unburnt oxygen (sees too much oxygen) throws LEAN code. vacuum leak - extra oxygen that wasnt metered causing a bad mixture - throws lean code. It's much more complicated then ya'll think.
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S550 on order
they just gave up or what? stock tune?
not trusting CEL lol, come on man. You'll kill your cats, spark plugs, possibly the cylinder walls/rings - wash them down with extra fuel.
Saying a lean code has one official cause is very vague. Yes in most cases on the m156 it's intake gaskets. Lean codes occur whenever oxygen sensors - see the name OXYGEN - read too much oxygen. It has nothing to do with detecting the amount of fuel at all. The reading is strictly measuring oxygen content. If you have a misifre (poor ignition/burn) unburnt fuel and unburnt oxygen (sees too much oxygen) throws LEAN code. vacuum leak - extra oxygen that wasnt metered causing a bad mixture - throws lean code. It's much more complicated then ya'll think.
not trusting CEL lol, come on man. You'll kill your cats, spark plugs, possibly the cylinder walls/rings - wash them down with extra fuel.
Saying a lean code has one official cause is very vague. Yes in most cases on the m156 it's intake gaskets. Lean codes occur whenever oxygen sensors - see the name OXYGEN - read too much oxygen. It has nothing to do with detecting the amount of fuel at all. The reading is strictly measuring oxygen content. If you have a misifre (poor ignition/burn) unburnt fuel and unburnt oxygen (sees too much oxygen) throws LEAN code. vacuum leak - extra oxygen that wasnt metered causing a bad mixture - throws lean code. It's much more complicated then ya'll think.
Last edited by avery.whss; Apr 23, 2014 at 11:24 PM.
