E-Class (W210) 1995-2002: E 200, E 220D, E 240, E 290TD, E 300TD, E 200, E 240, E 280, E 320, E 420, E 430 (Wagon, Touring, 4Matic)

CEL Code P0115

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Jan 25, 2009 | 06:44 PM
  #1  
dgiturbo's Avatar
Thread Starter
Super Member
 
Joined: Dec 2007
Posts: 898
Likes: 9
From: Woodstock, IL
His 2019 RAM Cummins Turbo Diesel Laramie; Her's 2007 ML320 CDI P3; Mine BMW R1200R
CEL Code P0115

Check engine light came on recently on the 2001 E320 Wagon 4Matic, and AutoZone's OBDII showed code P0115. I replaced the coolant sensor with a dealer part and cleared the code, but a week later the light is back on. The input voltage is 5V to the sensor, and and the harness and plug looks OK. Cleared the code again, and sure enough back on after a few days.
Any help/tips here? Thanks!
Reply
Old Jan 25, 2009 | 07:04 PM
  #2  
ohlord's Avatar
MBWorld Fanatic!
 
Joined: Apr 2007
Posts: 6,171
Likes: 16
300E a couple 1994 w124wagon E320 Wagon/,1971MGB Track/Rally, MG Midget Autocross ,2000 E320 wagon.
The circuit to the ecu could be

malfunctioning.Check your t stat for proper temp and then since you have done the most prudent steps,the next step will be off to a sds machine at an indie.Probably something simple,but since you cant see inside circuits,the sds will need to isolate it.
ohlord
Reply
Old Jan 25, 2009 | 07:57 PM
  #3  
dgiturbo's Avatar
Thread Starter
Super Member
 
Joined: Dec 2007
Posts: 898
Likes: 9
From: Woodstock, IL
His 2019 RAM Cummins Turbo Diesel Laramie; Her's 2007 ML320 CDI P3; Mine BMW R1200R
Thanks... Figured I would need to get a SDS machine involved. No indie known in the area, so looks like a trip to the dealer....
Reply
Old Jan 26, 2009 | 09:16 AM
  #4  
Ricco's Avatar
Junior Member
 
Joined: Jan 2009
Posts: 36
Likes: 0
97 E420
Hello, I have the same problem...How much was the coolant sensor?
TIA
Reply
Old Jan 26, 2009 | 09:20 PM
  #5  
dgiturbo's Avatar
Thread Starter
Super Member
 
Joined: Dec 2007
Posts: 898
Likes: 9
From: Woodstock, IL
His 2019 RAM Cummins Turbo Diesel Laramie; Her's 2007 ML320 CDI P3; Mine BMW R1200R
$18.00 from the dealer. Takes about 10-15 minutes to change once you get the feel of things.
Reply
Old Jan 27, 2009 | 04:21 PM
  #6  
Ricco's Avatar
Junior Member
 
Joined: Jan 2009
Posts: 36
Likes: 0
97 E420
Thanks for the info.
Reply
Old Apr 17, 2012 | 02:39 PM
  #7  
tmounib's Avatar
Junior Member
 
Joined: Sep 2011
Posts: 51
Likes: 0
From: Winchester VA, USA
wdbjf55fxtj020203
how did you get this temp sensor out? was it pressed in place? I bought the new one but look like it has no THREAD , how hard is it to pull it out,, is it being help in place by any mechanical hardware? (bols, nuts, etc,? )
please advise.
Reply
Old Apr 21, 2012 | 07:02 AM
  #8  
CKonstantin's Avatar
Member
 
Joined: Sep 2011
Posts: 147
Likes: 0
W210 E300D
Does your temperature gauge(in the cluster) behave normally, like it always used to?
Reply
MB World Stories

The Best of Mercedes & AMG

story-0

8 Oddball Mercedes Ideas That Actually Made it to Production

 Verdad Gallardo
story-1

Dubai Tuner Gives the Mercedes G-Class An Entirely New Look

 Verdad Gallardo
story-2

Six Gift Ideas Your AMG Loving Dad or Grad Will Cherish

 
story-3

7 Craziest Things AMG Gas Ever Built

 Verdad Gallardo
story-4

New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know

 Verdad Gallardo
story-5

6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

 Verdad Gallardo
story-6

Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

 Verdad Gallardo
story-7

Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

 Verdad Gallardo
story-8

8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

 Verdad Gallardo
story-9

Flawlessly Restored Mercedes 190E Evo II Heads to Auction

 Verdad Gallardo
Old Apr 21, 2012 | 12:23 PM
  #9  
tmounib's Avatar
Junior Member
 
Joined: Sep 2011
Posts: 51
Likes: 0
From: Winchester VA, USA
wdbjf55fxtj020203
Smile

Originally Posted by CKonstantin
Does your temperature gauge(in the cluster) behave normally, like it always used to?

The gage was working fine, the only problem I had ,was for the electric cooling fans will not kick when the temp got too hot,I already replaced the sensor and figured it out ,, all I needed was to take my time to find out how they mount it on top of the engine, was held in place with a CLIP, kinda like C-clip , took less than 5 minutes to replace it once I found out how it was mounted,
Thank you for your help.
Good day to you all
Reply
Old Apr 21, 2012 | 11:09 PM
  #10  
ohlord's Avatar
MBWorld Fanatic!
 
Joined: Apr 2007
Posts: 6,171
Likes: 16
300E a couple 1994 w124wagon E320 Wagon/,1971MGB Track/Rally, MG Midget Autocross ,2000 E320 wagon.
Anybody understand Plutoe?

None of the cars in question have an M104 designation engine. The E320 V6 is M112 the 1997 orphan motor E420 has an M119.
Anyone hazard a guess what the heck he is talking about and why he or anyone needs needs a VIN or is something other than the coolant sensor getting screwed in the rear as he put it?
Signed,
Confused
Reply
Old Apr 22, 2012 | 12:31 AM
  #11  
tmounib's Avatar
Junior Member
 
Joined: Sep 2011
Posts: 51
Likes: 0
From: Winchester VA, USA
wdbjf55fxtj020203
SIMPLECTY

Originally Posted by ohlord
None of the cars in question have an M104 designation engine. The E320 V6 is M112 the 1997 orphan motor E420 has an M119.
Anyone hazard a guess what the heck he is talking about and why he or anyone needs needs a VIN or is something other than the coolant sensor getting screwed in the rear as he put it?
Signed,
Confused
Rob (Oh-lord) <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p>
I do have great respect for the simple way you always answer others questions, you make the technical approach as simple as you write it, 1+1= 2.. I really appreciate your wonderful advises, most of all is the LOGICAL way of analyzing the function of every part, you really made it sound so simple,, I have lived all my life under one simple believe, ((if a man made it,, another man can fix it)) <o:p></o:p>
Rob. <o:p></o:p>
Thank you so much for your help and as you know,, some people like to pretend knowledge.<o:p></o:p>
Good day<o:p></o:p>
<o:p></o:p>
Reply

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 10:39 AM.

story-0
8 Oddball Mercedes Ideas That Actually Made it to Production

Slideshow: Mercedes has never been afraid to experiment, and some of its strangest ideas turned out to be surprisingly successful.

By Verdad Gallardo | 2026-06-10 17:43:40


VIEW MORE
story-1
Dubai Tuner Gives the Mercedes G-Class An Entirely New Look

Sideshow: A Middle Eastern tuner has transformed the Mercedes-AMG G 63 into an open-top special, replacing nearly every exterior panel in the process.

By Verdad Gallardo | 2026-06-10 15:29:50


VIEW MORE
story-2
Six Gift Ideas Your AMG Loving Dad or Grad Will Cherish

Slideshow: Six gift ideas your AMG loving dad or grad will cherish.

By | 2026-06-03 17:26:18


VIEW MORE
story-3
7 Craziest Things AMG Gas Ever Built

Slideshow: Sometimes AMG builds fast sedans. Other times, it builds twin-turbo V12 land missiles and six-wheeled off-road monsters.

By Verdad Gallardo | 2026-05-26 17:59:58


VIEW MORE
story-4
New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know

Slideshow: Mercedes-AMG's new electric GT 4-Door Coupe trades combustion for software, synthetic noise, and more than 1,100 horsepower.

By Verdad Gallardo | 2026-05-20 20:08:15


VIEW MORE
story-5
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-6
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-7
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-8
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-9
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE