P0012 - Camshaft Position - Timing Over-Retarded (Bank 1)
#102
#103
MBWorld Fanatic!
Replaced the magnet/solenoid about 2 weeks ago, reset via STAR, and ran the camshaft position test in STAR. So far no CEL, and surprisingly the car runs better. Guess I didn't realize that the somewhat rough idle and a touch of hesitation every once and a while were from the magnet/solenoid being faulty. Checked the part number on the other 3, and they are the same old part, so may have to change out those with the revised parts at some point. Overall a cheap and easy fix to a minor annoyance.
#105
MBWorld Fanatic!
#106
MBWorld Fanatic!
I really thought I had read this thread carefully and understood what was needed, so I was pretty confident taking this on last night. Unfortunatly, it didn't go quite as planned, so I thought i'd give a list of tools that should be on hand if you are about to try and tackle this project.
1. E8 (external torx socket)
2. T30 socket, screwdriver, in as many variations as humanly possible
3. 6mm 12point wrench
4. Various extentions
5. Tool pickup magnet
6. Magnetic tray to hold screws and bolts
I started this project out with just a socket set that does E-Torx, a screwdiver, and a couple of misc tools. I was able to do the passenger side pretty easily, but still haven't been able to get the driver's side done. I also had the distinct pleasure of making three trips to Lowes, luckily there is one right next to my hotel. Maybe I can tackle that tonight. The problem is getting the power steering reservoir out of the way. So far it's really eaten my lunch.
1. E8 (external torx socket)
2. T30 socket, screwdriver, in as many variations as humanly possible
3. 6mm 12point wrench
4. Various extentions
5. Tool pickup magnet
6. Magnetic tray to hold screws and bolts
I started this project out with just a socket set that does E-Torx, a screwdiver, and a couple of misc tools. I was able to do the passenger side pretty easily, but still haven't been able to get the driver's side done. I also had the distinct pleasure of making three trips to Lowes, luckily there is one right next to my hotel. Maybe I can tackle that tonight. The problem is getting the power steering reservoir out of the way. So far it's really eaten my lunch.
#107
Super Moderator
Join Date: Dec 2006
Location: Camas, WA
Posts: 2,403
Likes: 0
Received 57 Likes
on
24 Posts
2007 C230SS; 2014 ML350 BT
Mike,
I haven't had the pleasure of replacing the one's on the driver's side, YET The one's on the passenger side are a cake walk, the one's on the driver's side though, look to be a little tough. Indigo_kid gave us all the secret to dealing with the one's on the driver's side w/o taking everything apart. Hope the other's go well for you. Again, good luck.
I haven't had the pleasure of replacing the one's on the driver's side, YET The one's on the passenger side are a cake walk, the one's on the driver's side though, look to be a little tough. Indigo_kid gave us all the secret to dealing with the one's on the driver's side w/o taking everything apart. Hope the other's go well for you. Again, good luck.
#108
MBWorld Fanatic!
mskembo, YOU DON'T NEED TO REMOVE the PS fluid reservoir to replace the camshaft adjuster magnets. Just use 1/4" size 12-point closed-end wrench. I have done this. Much simpler go this route than having to remove the PS reservoir and all that...
Last edited by pcy; 04-08-2011 at 01:57 PM.
#109
Thank you so much for all this great info! I was just about to order the camshaft sensor until I read this thread. So now I'm going to change all 4 magnets with the updated part. Will update with my outcome.
#110
Super Member
Join Date: Oct 2008
Location: Austin, TX
Posts: 553
Received 0 Likes
on
0 Posts
07 C230 (sold) 2009 E63 AMG (SOLD), 2015 E 63 AMG S
I currently have the P0022 bank 2, after reading throughly my first move is to replace the magnets THEN clear the error codes. Hopefully this will resolve my problems, as which sometimes they can be very noticeable.
Problems go as following; Traveling at regular speed 60-75mph then error code pops up, car goes into limp mode not responding to my throttle and very deep tone in exhaust. After turning car off anf then back on the car shakes a bit but then fixes itself.
I havent ran my car hard for the past week, so the code hasnt poped up. Will order the magnets and let you guys know.
Problems go as following; Traveling at regular speed 60-75mph then error code pops up, car goes into limp mode not responding to my throttle and very deep tone in exhaust. After turning car off anf then back on the car shakes a bit but then fixes itself.
I havent ran my car hard for the past week, so the code hasnt poped up. Will order the magnets and let you guys know.
#111
Junior Member
Join Date: Mar 2011
Location: Grayson, GA
Posts: 38
Likes: 0
Received 1 Like
on
1 Post
W211 E55, W211 E500 estate, A124 E320
for all of you guys getting the "retard" code, your cars or going to need balance shafts, its about a 4000 dollar job. The metal is wearing off the sprocket and causing the camshafts to retard timing to stay running smoothly.
#113
Super Moderator
Join Date: Dec 2006
Location: Camas, WA
Posts: 2,403
Likes: 0
Received 57 Likes
on
24 Posts
2007 C230SS; 2014 ML350 BT
All P0012's codes referenced in this thread ARE 100% magnet/solenoid related, and NOT balance shaft.
#115
Senior Member
Join Date: Jan 2009
Location: Aventura, Fl
Posts: 267
Likes: 0
Received 0 Likes
on
0 Posts
2006 C230, 2006 BMW M3, bye bye C55:(
And this is the exact problem my car has been having lately.
Good to know.
Can you tell me which posts to review for advice and directions on how to replace the magnets?
Good to know.
Can you tell me which posts to review for advice and directions on how to replace the magnets?
#118
Super Moderator
Join Date: Dec 2006
Location: Camas, WA
Posts: 2,403
Likes: 0
Received 57 Likes
on
24 Posts
2007 C230SS; 2014 ML350 BT
P0025 is Bank 2 Position B. Bank 1 is passenger side, Bank 2 is drivers side, A position is Intake Cam, and B is Exhaust Cam. So, yours is Drivers side exhaust cam, so #1 in your drawing.
Since these are known to be a problem and are cheap and easy to replace, I again STRONGLY recommend anyone with magnet issues on the M272, to just replace them all, to eliminate issues with the others later down the road.
Since these are known to be a problem and are cheap and easy to replace, I again STRONGLY recommend anyone with magnet issues on the M272, to just replace them all, to eliminate issues with the others later down the road.
Last edited by johnand; 08-31-2011 at 04:38 PM.
#119
MBWorld Fanatic!
^ +1.
M272 engines are notorious for this issue. It's a matter of the time before the error comes up. Those magnets have been updated and the new version magnets don't seem to have the problem [with the original magnets].
I had this issue and I replaced the magnets about 10 months ago and no problems since then.
M272 engines are notorious for this issue. It's a matter of the time before the error comes up. Those magnets have been updated and the new version magnets don't seem to have the problem [with the original magnets].
I had this issue and I replaced the magnets about 10 months ago and no problems since then.
#120
Senior Member
Join Date: Jan 2009
Location: Aventura, Fl
Posts: 267
Likes: 0
Received 0 Likes
on
0 Posts
2006 C230, 2006 BMW M3, bye bye C55:(
P0025 is Bank 2 Position B. Bank 1 is passenger side, Bank 2 is drivers side, A position is Intake Cam, and B is Exhaust Cam. So, yours is Drivers side exhaust cam, so #1 in your drawing.
Since these are known to be a problem and are cheap and easy to replace, I again STRONGLY recommend anyone with magnet issues on the M272, to just replace them all, to eliminate issues with the others later down the road.
Since these are known to be a problem and are cheap and easy to replace, I again STRONGLY recommend anyone with magnet issues on the M272, to just replace them all, to eliminate issues with the others later down the road.
#121
MBWorld Fanatic!
#123
Senior Member
Join Date: Jan 2009
Location: Aventura, Fl
Posts: 267
Likes: 0
Received 0 Likes
on
0 Posts
2006 C230, 2006 BMW M3, bye bye C55:(
Out of sheer curiosity, why dont we just clean them up and put them back in? Like clean it with crc and put them back in.
A mechanic friend of mine thinks it would resolve the problem without replacing them
A mechanic friend of mine thinks it would resolve the problem without replacing them
#124
MBWorld Fanatic!
If those magnets are expensive, that's what I would've tried first. Since those magnets are [relatively] inexpensive, I'd rather replace them and move on with life.