M112.064 ENGINE error code P203D-2 PLEASE HELP
Thread Starter
Newbie
Joined: Mar 2016
Posts: 6
Likes: 0
w203 2001 c320
M112.064 ENGINE error code P203D-2 PLEASE HELP
hello guys
AM I HAVING SERIES ENGINE PROBLEMS ??
my ride is benz 2001 c320 m112.064
my scanner just gave these codes
p2017-2
self-adaptation of mixture formation for
right bank of cylinders is at limit
value (at idle speed). : Enleanment below
permissible limit (p0172)
p2086-2
self-adaptation of mixture formation for
left bank of cylinders is at limit value
(at idle speed). : Enleanment below
permissible limit (p0175)
__________________________________________________ ________
I searched the forum and came up with some things to begin with like
fuel filter, maf sensor, vacuum pipes , i think i can deal with these, but what bothers me is :
p203d-2
Angle variation of camshaft to crankshaft: Camshaft signal (maximum angular variation in 'retarded' direction ) (p1999)
, is it series ???
any help would be appreciated
thanks a lot.
photos with errors in scanner attached
AM I HAVING SERIES ENGINE PROBLEMS ??
my ride is benz 2001 c320 m112.064
my scanner just gave these codes
p2017-2
self-adaptation of mixture formation for
right bank of cylinders is at limit
value (at idle speed). : Enleanment below
permissible limit (p0172)
p2086-2
self-adaptation of mixture formation for
left bank of cylinders is at limit value
(at idle speed). : Enleanment below
permissible limit (p0175)
__________________________________________________ ________
I searched the forum and came up with some things to begin with like
fuel filter, maf sensor, vacuum pipes , i think i can deal with these, but what bothers me is :
p203d-2
Angle variation of camshaft to crankshaft: Camshaft signal (maximum angular variation in 'retarded' direction ) (p1999)
, is it series ???any help would be appreciated
thanks a lot.
photos with errors in scanner attached
Last edited by c320 rider; Mar 29, 2016 at 09:57 AM.
Super Moderator
Joined: Mar 2007
Posts: 5,295
Likes: 22
From: VA
THE C350
How does the car run?
How many miles?
My guess would be the Mass Air Flow Sensor which is made by Bosch and if you do replace it make sure to get a genuine Bosch one as the cheap aftermarket ones seems to cause issues. I got mine on Amazon for around $115. Wish I saved my old one as it was working fine.
Do you have access to a more sophisticated diagnostic software?
I have not heard of the p203d-2 code but notice it says stored and not current so it may be an old code unless you have cleared it and it came back. I believe that a worn timing chain/bad tensioner could cause this as that is what keeps the camshaft and crankshaft together but unless you have high miles or poor maintenance I doubt it is that and could just be a bad sensor.
I have found after scanning many peoples cars with STAR that the dealer rarely goes back and clears codes after doing work. So if a sensor went bad years ago it may still show up as a pending code. With STAR you can look at the details and see when that code was last relevant.
How many miles?
My guess would be the Mass Air Flow Sensor which is made by Bosch and if you do replace it make sure to get a genuine Bosch one as the cheap aftermarket ones seems to cause issues. I got mine on Amazon for around $115. Wish I saved my old one as it was working fine.
Do you have access to a more sophisticated diagnostic software?
I have not heard of the p203d-2 code but notice it says stored and not current so it may be an old code unless you have cleared it and it came back. I believe that a worn timing chain/bad tensioner could cause this as that is what keeps the camshaft and crankshaft together but unless you have high miles or poor maintenance I doubt it is that and could just be a bad sensor.
I have found after scanning many peoples cars with STAR that the dealer rarely goes back and clears codes after doing work. So if a sensor went bad years ago it may still show up as a pending code. With STAR you can look at the details and see when that code was last relevant.
Last edited by samaritrey; Mar 29, 2016 at 10:57 AM.
Thread Starter
Newbie
Joined: Mar 2016
Posts: 6
Likes: 0
w203 2001 c320
How does the car run?
How many miles?
My guess would be the Mass Air Flow Sensor which is made by Bosch and if you do replace it make sure to get a genuine Bosch one as the cheap aftermarket ones seems to cause issues. I got mine on Amazon for around $115. Wish I saved my old one as it was working fine.
Do you have access to a more sophisticated diagnostic software?
I have not heard of the p203d-2 code but notice it says stored and not current so it may be an old code unless you have cleared it and it came back. I believe that a worn timing chain/bad tensioner could cause this as that is what keeps the camshaft and crankshaft together but unless you have high miles or poor maintenance I doubt it is that and could just be a bad sensor.
I have found after scanning many peoples cars with STAR that the dealer rarely goes back and clears codes after doing work. So if a sensor went bad years ago it may still show up as a pending code. With STAR you can look at the details and see when that code was last relevant.
How many miles?
My guess would be the Mass Air Flow Sensor which is made by Bosch and if you do replace it make sure to get a genuine Bosch one as the cheap aftermarket ones seems to cause issues. I got mine on Amazon for around $115. Wish I saved my old one as it was working fine.
Do you have access to a more sophisticated diagnostic software?
I have not heard of the p203d-2 code but notice it says stored and not current so it may be an old code unless you have cleared it and it came back. I believe that a worn timing chain/bad tensioner could cause this as that is what keeps the camshaft and crankshaft together but unless you have high miles or poor maintenance I doubt it is that and could just be a bad sensor.
I have found after scanning many peoples cars with STAR that the dealer rarely goes back and clears codes after doing work. So if a sensor went bad years ago it may still show up as a pending code. With STAR you can look at the details and see when that code was last relevant.
the car runs fine with 124274 miles, and i think i can access to more detailed info like 'live data', i keep clearing the code p203d-2 but it comes again.
what sensor you are referring to , i.e camshaft or crankshaft sensor ?
worn timing chain/bad tensioner wtf
i will keep looking\investigation hope to find the malfunction part.
MBWorld Fanatic!
Joined: Aug 2015
Posts: 1,059
Likes: 73
From: DC Metro Area
2007 Mercedes E550
hello guys
AM I HAVING SERIES ENGINE PROBLEMS ??
my ride is benz 2001 c320 m112.064
my scanner just gave these codes
p2017-2
self-adaptation of mixture formation for
right bank of cylinders is at limit
value (at idle speed). : Enleanment below
permissible limit (p0172)
p2086-2
self-adaptation of mixture formation for
left bank of cylinders is at limit value
(at idle speed). : Enleanment below
permissible limit (p0175)
__________________________________________________ ________
I searched the forum and came up with some things to begin with like
fuel filter, maf sensor, vacuum pipes , i think i can deal with these, but what bothers me is :
p203d-2
Angle variation of camshaft to crankshaft: Camshaft signal (maximum angular variation in 'retarded' direction ) (p1999)
, is it series ???
any help would be appreciated
thanks a lot.
photos with errors in scanner attached
AM I HAVING SERIES ENGINE PROBLEMS ??
my ride is benz 2001 c320 m112.064
my scanner just gave these codes
p2017-2
self-adaptation of mixture formation for
right bank of cylinders is at limit
value (at idle speed). : Enleanment below
permissible limit (p0172)
p2086-2
self-adaptation of mixture formation for
left bank of cylinders is at limit value
(at idle speed). : Enleanment below
permissible limit (p0175)
__________________________________________________ ________
I searched the forum and came up with some things to begin with like
fuel filter, maf sensor, vacuum pipes , i think i can deal with these, but what bothers me is :
p203d-2
Angle variation of camshaft to crankshaft: Camshaft signal (maximum angular variation in 'retarded' direction ) (p1999)
, is it series ???any help would be appreciated
thanks a lot.
photos with errors in scanner attached
Thread Starter
Newbie
Joined: Mar 2016
Posts: 6
Likes: 0
w203 2001 c320
LexBrett2
no i'm not running oxygen sensor spacers post cat
it's weird folks here don't know what p203d-2 is....
i wish i have got STAR to hook it up
the error code came up under ME-SFI 2.8 MOTOR ELECTRONICS 2.8
I don't even know what that is....
no i'm not running oxygen sensor spacers post cat
it's weird folks here don't know what p203d-2 is....
i wish i have got STAR to hook it up
the error code came up under ME-SFI 2.8 MOTOR ELECTRONICS 2.8
I don't even know what that is....
Thread Starter
Newbie
Joined: Mar 2016
Posts: 6
Likes: 0
w203 2001 c320
i tried to google this code error and see if some people have faced it before,,, found two mates having the same error followed by noise in engine after short time, ended of failure in engine for both of them.
anyway i will try to remove the valve/head covers and check the camshaft for any signs of excess wear, check the timing chain for slack.
wish me good luck.
anyway i will try to remove the valve/head covers and check the camshaft for any signs of excess wear, check the timing chain for slack.
wish me good luck.
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