Mercedes

Have Mercedes Questions? Ask a Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Mercedes

I have a code on my 2012 sprinter P20bd I replaced the blue…

Customer Question
Hi I have...

Hi I have a code on my 2012 sprinter P20bd I replaced the blue deff heater still have same code wont clear

Mechanic's Assistant: Have you checked the coolant level? Has there been any leaking from the hoses?

Why sould coolent leak give such code?

Mechanic's Assistant: Are you fixing your Sprinter yourself? What have you tried so far?

Yes fixing my self took vehicle to local benz dealer they told me my adblue tank heating element is burned out

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

I replaced the adblue heating element with a new one but still have same code p20bd

Submitted: 1 year ago.Category: Mercedes
Show More
Show Less
Ask Your Own Mercedes Question
Customer reply replied 1 year ago
Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Live Phone Call. Let me know if you need more information, or send me the service offer(s) so we can proceed.
Answered in 3 hours by:
2/3/2017
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago
Lou P. master tech
Lou P. master tech, Mercedes Technician
Category: Mercedes
Satisfied Customers: 5,505
Experience: 15 years master certified 100% fix rate and have access to factory radio codes, wiring, and instructions.
Verified

Hello, my name is***** and i will do my best to assist you.I am going over your story now and will reply back soon with some info,thanks!

Ask Your Own Mercedes Question
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago

What kind of scanner are you using to read/erase the codes , that may be part of the issue , let me know. Lou

Ask Your Own Mercedes Question
Customer reply replied 1 year ago
Autel scanner and also tried with snapon
Customer reply replied 1 year ago
Is it possible that it may need some sort of software update ?
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago
Ok , I have a launch and a star and with the launch I can read adblue codes all day but cannot erase them , there is something about the adblue/scr module that will only allow the star to erase the codes , we had lots of issues with Hester codes and software updates but the code would have erased and came back after driving a few times , I firmly think the system needs to be read and erased with a star diagnosis. That will most likely fix you up providing you verified the heater and circuit are good .
Ask Your Own Mercedes Question
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago

did you need any more follow up on this?

Ask Your Own Mercedes Question
Customer reply replied 1 year ago
I will let me try to connect everything and clear codes will get back to u soon
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago

ok, sounds good.

Ask Your Own Mercedes Question
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago

Any luck ?

Ask Your Own Mercedes Question
Customer reply replied 1 year ago
Nothing chasing wires
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago

Anything I can assist with ?

Ask Your Own Mercedes Question
Customer reply replied 1 year ago
The SCR module under the seat can it short out to 1900 ohmes?
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago

What are you measuring that you are reading 1900ohms at

Ask Your Own Mercedes Question
Customer reply replied 1 year ago
Adblue tank wires from the tank forward
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago

what is the vin of the sprinter . I will get you the wiring diagram from the adblue control unit to all the heaters and etc

Ask Your Own Mercedes Question
Customer reply replied 1 year ago
Thanks very much We got the wiring diagram already looking it too it right now will keep u posted of are findings
Customer reply replied 1 year ago
I think we have to perform software update to select the catalytic reduction SCR module there are bulletins to change the software in the control unit to change heater element fault tolerance
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago

you are correct, but what is the date of the bulletins , because this was a huge issue when adblue was first introduced.

Ask Your Own Mercedes Question
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago

those are not related to the adblue system.

Ask Your Own Mercedes Question
Customer reply replied 1 year ago
Took photo so u can see it's attached and white connector one pin looks burne
Customer reply replied 1 year ago
There is module under seat with part number A6429003301 we just disconnected and scanned no codes anymore what u think ?
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago

i see the burn now, weird, ,let me check that part number.

Ask Your Own Mercedes Question
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago

well, no codes because you unplugged the adblue control unit lol.

Ask Your Own Mercedes Question
Customer reply replied 1 year ago
Lou we're you able to find out anything else that can help me with this sprinter I think I have a problem with the
Exhaust Gas After Treatment Control Module part# ***** do you think ?
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago

well if the wires from the heater to the module are good and the heater is new then I would not replace anything else until you see if the codes can get erased with a mercedes scan tool. there are a lot of aftermarket scanners that will not be able to erase codes from the adblue module.

:(

so I would not do anything else until that is done first.

Ask Your Own Mercedes Question
Was this answer helpful?
Ask Lou P. master tech Your Own Question
Lou P. master tech
Lou P. master tech
Lou P. master tech, Mercedes Technician
Category: Mercedes
Satisfied Customers: 5,505
5,505 Satisfied Customers
Experience: 15 years master certified 100% fix rate and have access to factory radio codes, wiring, and instructions.

Lou P. master tech is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry.

Stephanie PElm City, NC

used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future.

David L.Richmond, TX

9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much.

PhilMarysville, CA

Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible.

CharlesWalnut Creek, CA

As a single woman, I really appreciate an excellent and affordable opinion.
Thank you Geordie, I will not hesitate to contact justanswer in the future!

SueCharleston, WV

Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff.

JimCastleberry, FL

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

< Previous | Next >

Meet the Experts:

MB Paul

MB Paul

Mercedes Technician

3,567 satisfied customers

Qualified Mercedes Benz Diagnostic Technician - 20+ years experience - Workshop Foreman for Mercedes

Marty

Marty

Mercedes Technician

29,009 satisfied customers

Bosch Certified Master Tech. Over 35 years experience.

Lou P. master tech

Lou P. master tech

Mercedes Technician

5,505 satisfied customers

15 years master certified 100% fix rate and have access to factory radio codes, wiring, and instructions.

Michael Warfield

Michael Warfield

Factory Mercedes-Benz Technician

3,131 satisfied customers

Mercedes-Benz Master Certified technician

Matt

Matt

Engineer

602 satisfied customers

Mechanical Engineer with 23 years experience in the auto industry, 8 yrs in formula 1 engine testing

promerc

promerc

mercedes diagnostic technician

553 satisfied customers

Qualified mercedes diagnostic technician & service team manager , ATA registered Master tech

Hipo64

Hipo64

Mercedes Technician

444 satisfied customers

Work and diagnose electronics on daily basis.

< Previous | Next >

Related Mercedes Questions
2006 Dodge/Mercedes Sprinter 3500; I5 2.7L turbo diesel What
2006 Dodge/Mercedes Sprinter 3500; I5 2.7L turbo dieselWhat is the R&R procedure for the A/C compressor?One place tells me to just remove the belt, the A/C hoses/lines, and three attaching bolts that … read more
fordguy4u
fordguy4u
Automotive Tech
Vocational, Technical or Trade Scho
70 satisfied customers
My central locking has stopped working on my sprinter camper
My central locking has stopped working on my sprinter camper van. Neither key will unlock it electronically. … read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
5,505 satisfied customers
Mercedes 2015 cargo sprinter How to reset "def check"
Mercedes 2015 cargo sprinter How to reset "def check" dashboard warning light … read more
Wolfgang
Wolfgang
3 satisfied customers
Sprinter van def fluid indicator says that it is empty but
Sprinter van def fluid indicator says that it is empty but it's full. Start countdown is now at 2 starts left. … read more
Christopher Jirak
Christopher Jirak
Automotive Diesel Technology
15 satisfied customers
What does service signal 390 indicate? 2016 sprinter. Tried
what does service signal 390 indicate? JA: What is the model/year of your Mercedes? Customer: 2016 sprinter JA: Are you fixing your Sprinter yourself? What have you tried so far? Customer: tried nothi… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,009 satisfied customers
2013 sprinter 2500 3.0 diesel will not start. Van cranks
van cranks over 5-10 times. Stops cranking. Repeat. Scan shows a p155700 code. Doesn't appear to be getting any fuel. … read more
Wolfgang
Wolfgang
3 satisfied customers
I have a 2004 mercedesbenz sprinter, a sprint shifter. it
i have a 2004 mercedesbenz sprinter, a sprint shifter. it lurches at take off and stalls losing power. at one stage mechanic fixed a bolt that had broken on the mainpower line, it drove perfectly for … read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
4,679 satisfied customers
2005 FRIEGHTLINER Sprinter not shifting to 2nd gear.
2005 FRIEGHTLINER Sprinter not shifting to 2nd gear. … read more
Wolfgang
Wolfgang
3 satisfied customers
I have a 2011 Mercedes Sprinter 3.0l that will not reach the
I have a 2011 Mercedes Sprinter 3.0l that will not reach the correct exhaust system temp for DPF regeneration?… read more
Wolfgang
Wolfgang
3 satisfied customers
It's a 2008 Dodge Sprinter 2500. It would intermittently
It's a 2008 Dodge Sprinter 2500. It would intermittently make "Rumble Strip" noises while driving. Then after about 30 minutes on the road and a stop at a service station it pulled out 100 yards or so… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,009 satisfied customers
I have a 2010 Mercedes sprinter wdzpe7cc3a5465214. rear
Hello, my name is***** have a 2010 Mercedes sprinter wdzpe7cc3a5465214 . rear drivers tail light does not work. I was adding a trailer plug and i think I short circuited the wire momentarily and now t… read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
5,505 satisfied customers
Mercedes sprinter 2500 (2009) Serie #: WD0BE7AC395418460 i
Mercedes sprinter 2500 (2009) Serie # : WD0BE7AC395418460i need the picture where is intake runner… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,009 satisfied customers
My sprinter died on the highway and will restart then shut
my sprinter died on the highway and will restart then shut off aftr 2sec. the dealer replaced the alternator which doesn't make sence because it started everytime just didn't stay running. not they ar… read more
fordguy4u
fordguy4u
Automotive Tech
Vocational, Technical or Trade Scho
70 satisfied customers
Not getting warm. Sprinter 413 cdi 2004. Its going to the
its going to the garage in the morning to try new thermostat … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Is there 2 different voltage ratings on 2011 sprinter glow
is there 2 different voltage ratings on 2011 sprinter glow plugs … read more
Robert R
Robert R
Auto Technician
Vocational, Technical or Trade Scho
879 satisfied customers
The sprinter van will not start and there is a code that
The sprinter van will not start and there is a code that says: … read more
Gabriel Grey
Gabriel Grey
Master Service Technician
Associates
406 satisfied customers
Sprinter van stuck in gead (reverse) 2006. Disconnected the
that's all other than disconnect the tailshaft to move it… read more
sprinkles08
sprinkles08
Technician
High School or GED
11 satisfied customers
Water pump leaking 2009 sprinter, Coolant from back of water
Coolant from back of water pump and the bearing on the pump is growling . Do I have to remove the high pressure fuel pump ? … read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
5,505 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x