CEL Code & Trouble Shoot ?
Thread Starter
Senior Member
Joined: Feb 2009
Posts: 433
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From: NJ
CEL Code & Trouble Shoot ?
I've been trolling here for awhile, but this is my first post. I read a lot and have yet to find any solid information on the specific CEL Code:
P0128 - Check Coolant Valve (something along those lines for the message)
http://www.obd-codes.com/p0128 (some info related to the code, i've found)
I know the code does not in essentially hurt anything in the engine so I've reset it considering it's telling me my engine isn't up to normal operating temperature in a set amount of time. I was wondering what are the necessary steps to fix this CEL?? Changing a faulty thermostat?? Even though my car is running fine... I'm kind of lost on where to start on such a broad CEL code.
TIA
Craig
P0128 - Check Coolant Valve (something along those lines for the message)
http://www.obd-codes.com/p0128 (some info related to the code, i've found)
I know the code does not in essentially hurt anything in the engine so I've reset it considering it's telling me my engine isn't up to normal operating temperature in a set amount of time. I was wondering what are the necessary steps to fix this CEL?? Changing a faulty thermostat?? Even though my car is running fine... I'm kind of lost on where to start on such a broad CEL code.
TIA
Craig
MBWorld Fanatic!
Joined: Oct 2006
Posts: 3,642
Likes: 13
From: Caribbean/Florida/Colorado
E-ZGO 53hp., 1999 E 430 sport, 2004 E 55, 2008 Tahoe LTZ on 24"s
Tell us more about your car.
First question, are you the original owner?
Second question, Did you know some of the early LOW temp thermostats (aftermarket) would throw this code.
Here is a link with some info,
https://mbworld.org/forums/w211-amg/...hermostat.html
First question, are you the original owner?
Second question, Did you know some of the early LOW temp thermostats (aftermarket) would throw this code.
Here is a link with some info,
https://mbworld.org/forums/w211-amg/...hermostat.html
Thread Starter
Senior Member
Joined: Feb 2009
Posts: 433
Likes: 0
From: NJ
Tell us more about your car.
First question, are you the original owner?
Second question, Did you know some of the early LOW temp thermostats (aftermarket) would throw this code.
Here is a link with some info,
https://mbworld.org/forums/w211-amg/...hermostat.html
First question, are you the original owner?
Second question, Did you know some of the early LOW temp thermostats (aftermarket) would throw this code.
Here is a link with some info,
https://mbworld.org/forums/w211-amg/...hermostat.html
MBWorld Fanatic!
Joined: Jan 2004
Posts: 7,092
Likes: 13
From: Salt Lake City (but not Morm)
2003 E55 & 2014 GL550
Sorry you are not getting more responses. The guys are this forum are just awesome but gotta admit, this ones kinda rare so there may not be a lot of guys with "Hey I had that and here's what I did..." responses.
Quick check of the code on search engine only turned up a handful of people with problems.
Benz sensors go bad all the time so if it's not your thermostat, I would replace the sensor next.
Not sure where the darn sensor is for that but if it's cheaper, maybe swap the sensor first.
Any overheating problems?
Quick check of the code on search engine only turned up a handful of people with problems.
Benz sensors go bad all the time so if it's not your thermostat, I would replace the sensor next.
Not sure where the darn sensor is for that but if it's cheaper, maybe swap the sensor first.
Any overheating problems?
Thread Starter
Senior Member
Joined: Feb 2009
Posts: 433
Likes: 0
From: NJ
Sorry you are not getting more responses. The guys are this forum are just awesome but gotta admit, this ones kinda rare so there may not be a lot of guys with "Hey I had that and here's what I did..." responses.
Quick check of the code on search engine only turned up a handful of people with problems.
Benz sensors go bad all the time so if it's not your thermostat, I would replace the sensor next.
Not sure where the darn sensor is for that but if it's cheaper, maybe swap the sensor first.
Any overheating problems?
Quick check of the code on search engine only turned up a handful of people with problems.
Benz sensors go bad all the time so if it's not your thermostat, I would replace the sensor next.
Not sure where the darn sensor is for that but if it's cheaper, maybe swap the sensor first.
Any overheating problems?
This is a little off topic but here's a link to my pictures of the car 3 weeks before it got macked by a drunk driver head on at 80MPH - the car saved my life.
http://www.audizine.com/forum/showthread.php?t=241670
Last edited by Craigo; Feb 24, 2009 at 02:53 PM.
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Joined: Mar 2008
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From: San Diego, CA
2013 C63 Coupe, 2006 Evo 9 MR
I may have had that problem when my CEL went on couple of weeks ago. I wasn't sure of what the code was since I just took it to the dealership, but I believe they said it was the coolant valve not opening or closing correctly. They had to replace the unit I believe. I have the documents at home and will check on what it was exactly.
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MBWorld Fanatic!
Joined: Oct 2006
Posts: 3,642
Likes: 13
From: Caribbean/Florida/Colorado
E-ZGO 53hp., 1999 E 430 sport, 2004 E 55, 2008 Tahoe LTZ on 24"s
[QUOTE=Craigo;3372886] I understand there isn't much technical information available for such a car that usually isn't looked at the by the end user as much. QUOTE]
Here is a goodly amount of information for us Tech/diyers.
http://www.startekinfo.com/StarTek/
Here is a goodly amount of information for us Tech/diyers.
http://www.startekinfo.com/StarTek/
Thread Starter
Senior Member
Joined: Feb 2009
Posts: 433
Likes: 0
From: NJ
I may have had that problem when my CEL went on couple of weeks ago. I wasn't sure of what the code was since I just took it to the dealership, but I believe they said it was the coolant valve not opening or closing correctly. They had to replace the unit I believe. I have the documents at home and will check on what it was exactly.
Thread Starter
Senior Member
Joined: Feb 2009
Posts: 433
Likes: 0
From: NJ
Junior Member
Joined: Mar 2008
Posts: 43
Likes: 0
From: San Diego, CA
2013 C63 Coupe, 2006 Evo 9 MR
Ok I've got the repair sheet here, it says they performed a SDS short test and came up with code 202C-008, I'm not sure if that's the equivalent of this OBD-II code but it sounds very similar. It continues on to say they found the actual value for the coolant temp not rising with vehicle warm up. They determined thermostat was not closing completely. They replaced this part, part number: 113-203-02-75 . I'm not sure how much it costs because it was done under warranty. Hope that helps.
Thread Starter
Senior Member
Joined: Feb 2009
Posts: 433
Likes: 0
From: NJ
Ok I've got the repair sheet here, it says they performed a SDS short test and came up with code 202C-008, I'm not sure if that's the equivalent of this OBD-II code but it sounds very similar. It continues on to say they found the actual value for the coolant temp not rising with vehicle warm up. They determined thermostat was not closing completely. They replaced this part, part number: 113-203-02-75 . I'm not sure how much it costs because it was done under warranty. Hope that helps.
