Hi men
Where is O2 sensor Bank 2 Sensor 3 on the M272?
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w211, W201
Where is O2 sensor Bank 2 Sensor 3 on the M272?
Dear pals, I'm having the Error code P0064 HO2S Heater Control Circuit High (Bank 2 Sensor 3), I'm trying to find it, but really can't find it... I thought it is under the car, around back seats? thanks.
Thread Starter
Newbie
Joined: Apr 2015
Posts: 11
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w211, W201
look I think it is the piece mark as 450. But how i can acces it? only way it is from under?
Thread Starter
Newbie
Joined: Apr 2015
Posts: 11
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w211, W201
Look your making more out of this than the part is worth in time spent playing around looking for the part---Like I indicated hours ago---put the car on a lift look up!!
Now if you want to crawl under the car on a driveway or lawn fine,but you will be back whining that you can't see the part or how do I get a tool up there to remove the sensor or I am afraid the car will fall on me or what will my neighbors say about the body under a car!!
Now if you want to crawl under the car on a driveway or lawn fine,but you will be back whining that you can't see the part or how do I get a tool up there to remove the sensor or I am afraid the car will fall on me or what will my neighbors say about the body under a car!!
At last, Im street mechanic's! Neighbours already know i will die one day by my car while i was under it!
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c280 2007
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Joined: Feb 2018
Posts: 20
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2007 C280 4Matic
The only difference between the up and downstream sensors is the length of the wire.. One is short and one is long based on where they plug into the car.
The code could be the sensor itself or a dirty connection where the sensor plugs into the car due to age.
When I replaced mine, it didn't fix the problem. I was getting this code along with a fuel injector code and one of the cam adjust solenoids all on the same side of the engine.. Bank 2.
The solenoild had a crack on the plastic tube where the wire plugs in so I started with replacing that.
The strange thing was was once I replaced the cam adjust solenoid, the other 2 codes went away so it ended up the sensor wasn't bad after all.
I also had the intake manifold repaired to correct the POS plastic broken pivot arm that controls the runner flaps and starting getting codes for the some of the cylinder coil packs after the repair.
Being the car is a 2007, I figured I had bad connections because the connectors were disturbed due to the repair so I cleaned all the connections and lubed with dielectric grease and all the codes disappeared.
You could probably start with checking and cleaning the connector on it, clear the code, and see if it comes back. If it does, then replace it.
Last edited by jammgm; Nov 18, 2020 at 08:37 AM.
MBWorld Fanatic!
Joined: Feb 2014
Posts: 6,190
Likes: 1,550
From: MA
2008 E350 4Matic, 2011 E350 4matic
Bank 2 is on the driver's side and if I recall correctly, sensor 3 is the downstream one after the CAT.
The only difference between the up and downstream sensors is the length of the wire.. One is short and one is long based on where they plug into the car.
The code could be the sensor itself or a dirty connection where the sensor plugs into the car due to age.
When I replaced mine, it didn't fix the problem. I was getting this code along with a fuel injector code and one of the cam adjust solenoids all on the same side of the engine.. Bank 2.
The solenoild had a crack on the plastic tube where the wire plugs in so I started with replacing that.
The strange thing was was once I replaced the cam adjust solenoid, the other 2 codes went away so it ended up the sensor wasn't bad after all.
I also had the intake manifold repaired to correct the POS plastic broken pivot arm that controls the runner flaps and starting getting codes for the some of the cylinder coil packs after the repair.
Being the car is a 2007, I figured I had bad connections because the connectors were disturbed due to the repair so I cleaned all the connections and lubed with dielectric grease and all the codes disappeared.
You could probably start with checking and cleaning the connector on it, clear the code, and see if it comes back. If it does, then replace it.
The only difference between the up and downstream sensors is the length of the wire.. One is short and one is long based on where they plug into the car.
The code could be the sensor itself or a dirty connection where the sensor plugs into the car due to age.
When I replaced mine, it didn't fix the problem. I was getting this code along with a fuel injector code and one of the cam adjust solenoids all on the same side of the engine.. Bank 2.
The solenoild had a crack on the plastic tube where the wire plugs in so I started with replacing that.
The strange thing was was once I replaced the cam adjust solenoid, the other 2 codes went away so it ended up the sensor wasn't bad after all.
I also had the intake manifold repaired to correct the POS plastic broken pivot arm that controls the runner flaps and starting getting codes for the some of the cylinder coil packs after the repair.
Being the car is a 2007, I figured I had bad connections because the connectors were disturbed due to the repair so I cleaned all the connections and lubed with dielectric grease and all the codes disappeared.
You could probably start with checking and cleaning the connector on it, clear the code, and see if it comes back. If it does, then replace it.
If you repaired the intake manifold levers, you should also change out the oil breather cover and separator. There's a kit on FCPeuro. Basically when those are bad, it allows oil to enter the intake instead of just the vapors which gums up the flaps and eventually the flaps break off and damage the engine. Which is why MB normally just replaces the intake instead of repairing it. Those levers are designed to break when those flaps get gummed up which is a sign the intake should be replaced. I just replaced my intake with a new one, around $600+ although you can get a reman on eBay for about $350. That only had a one year warranty though and the new one was lifetime.
https://www.fcpeuro.com/products/mer...kit-oem-515810
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Joined: Feb 2018
Posts: 20
Likes: 1
2007 C280 4Matic
I'll check into that breather cover and seperator kit.. thanks.
When we pulled the manifold off, the runner flaps were nice and clean and not broken I attributed it to the car having low mileage.. ~75k.
I chose to repair the manifold versus replacing it because the new ones I found came with the same POC plastic pivot arm so why put the same problem back on for $600 plus the labor only to break again.
I have a friend who's a full time mechanic and does work on the side and did the repair which cost me $500, parts and labor.
When we pulled the manifold off, the runner flaps were nice and clean and not broken I attributed it to the car having low mileage.. ~75k.
I chose to repair the manifold versus replacing it because the new ones I found came with the same POC plastic pivot arm so why put the same problem back on for $600 plus the labor only to break again.
I have a friend who's a full time mechanic and does work on the side and did the repair which cost me $500, parts and labor.
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MBWorld Fanatic!
Joined: Feb 2014
Posts: 6,190
Likes: 1,550
From: MA
2008 E350 4Matic, 2011 E350 4matic
I'll check into that breather cover and seperator kit.. thanks.
When we pulled the manifold off, the runner flaps were nice and clean and not broken I attributed it to the car having low mileage.. ~75k.
I chose to repair the manifold versus replacing it because the new ones I found came with the same POC plastic pivot arm so why put the same problem back on for $600 plus the labor only to break again.
I have a friend who's a full time mechanic and does work on the side and did the repair which cost me $500, parts and labor.
When we pulled the manifold off, the runner flaps were nice and clean and not broken I attributed it to the car having low mileage.. ~75k.
I chose to repair the manifold versus replacing it because the new ones I found came with the same POC plastic pivot arm so why put the same problem back on for $600 plus the labor only to break again.
I have a friend who's a full time mechanic and does work on the side and did the repair which cost me $500, parts and labor.
Junior Member
Joined: Feb 2018
Posts: 20
Likes: 1
2007 C280 4Matic
I repaired the manifold around 2 years ago and couldn't find a new OEM one with the metal pivot arm at that time so I went with the repair kit.
I never knew this about the breather and separator causing the runner flaps to fail over time but will definitely replace them.
Thanks for the information,
I never knew this about the breather and separator causing the runner flaps to fail over time but will definitely replace them.
Thanks for the information,
Last edited by jammgm; Nov 19, 2020 at 03:20 PM.
MBWorld Fanatic!
Joined: Feb 2014
Posts: 6,190
Likes: 1,550
From: MA
2008 E350 4Matic, 2011 E350 4matic
I repaired the manifold around 2 years ago and couldn't find a new OEM one with the metal pivot arm at that time so I went with the repair kit.
I never knew this about the breather and separator causing the runner flaps to fail over time but will definitely replace them.
Thanks for the information,
I never knew this about the breather and separator causing the runner flaps to fail over time but will definitely replace them.
Thanks for the information,
https://www.fcpeuro.com/products/mercedes-intake-manifold-replacement-kit-pierburg-516475
https://www.ebay.com/itm/Mercedes-E350-2006-2011-M272-V6-Engine-Modified-Intake-Manifold-Gasket-Set/192758184793
