Mercedes

Have Mercedes Questions? Ask a Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Mercedes

I have a 2008 MB GL320 with around 133K miles on it now.

Customer Question
Hello sir. I have...
Hello sir. I have a 2008 MB GL320 with around 133K miles on it now. Check engine light has come on just in the last couple of days about the same time the temps took a nose dive. Friday I bought 23 gals diesel fuel and for the first time added approx 8-10oz of diesel treatment trying to prevent gelling. It ran just fine the 30 miles to the house. Next day, check engine light is on. AutoZone ran diags today and found a "P1402 Secondary Air Injection System Control Circuit B" message. I have noticed a loss in power/acceleration lately on cold startup, but so far no limp mode. Could it be a problem with the pressure differential sensor or what are your thoughts? thanks in advance...
Submitted: 1 month ago.Category: Mercedes
Show More
Show Less
Ask Your Own Mercedes Question
Answered in 4 minutes by:
1/1/2018
Mercedes Mechanic: Steve, Automotive Expert replied 1 month ago
Steve
Steve, Automotive Expert
Category: Mercedes
Satisfied Customers: 25,068
Experience: Automotive Expert
Verified

hi, is that the only code?

Ask Your Own Mercedes Question
Customer reply replied 1 month ago
sir.
Mercedes Mechanic: Steve, Automotive Expert replied 1 month ago

Please do not forget to click a five star rating as a rating is how I receive credit for my answer, thank you

that code only points to an emission control system that is not involved in the engine's operation, so there is nothing that points to the pressure differential sensor.

if you don't have any other codes noting is significantly wrong with the engine, so the loss of power may be related to the engine not being warmed up yet due to the cold temps

Please let me know if you have further questions. Please do not forget to click a five star rating as a rating is how I receive credit for my answer, thank you. Best wishes with your vehicle.

Ask Your Own Mercedes Question
Mercedes Mechanic: Steve, Automotive Expert replied 1 month ago
did you have additional questions?
Ask Your Own Mercedes Question
Customer reply replied 1 month ago
I had a similar problem with an 07 Chevy trailblazer. Turned out to be the catalytic converter. Any thoughts or how might I narrow it down?
Mercedes Mechanic: Steve, Automotive Expert replied 1 month ago
The first thing I would do is invest in a proper scan with a Mercedes scan tool as that p code could be misleading on a diesel. I suspect a proper scan and diagnostic will be more than enough to verify if / what the issue is. Please do not forget to click on a positive rating
Ask Your Own Mercedes Question
Mercedes Mechanic: Steve, Automotive Expert replied 1 month ago
Did you have additional questions?
Ask Your Own Mercedes Question
Ask Steve Your Own Question
Steve
Steve
Steve, Automotive Expert
Category: Mercedes
Satisfied Customers: 25,068
25,068 Satisfied Customers
Experience: Automotive Expert

Steve 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

3,771 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
Nothing work fini. 2005. Engine swap. Manuel
Nothing work fini JA: What year is your MINI? Customer: 2005 JA: Are you fixing your MINI yourself? What have you tried so far? Customer: Engine swap JA: How many miles are on the car? Is it an automa… read more
Matt
Matt
Engineer
Bachelor's Degree
602 satisfied customers
I have 2004 g500. The wiper motor was loose and wipers were
The wiper motor was loose and wipers were hitting the windshield trim … read more
Bart Zorchets
Bart Zorchets
1 satisfied customers
We used the car last night and didn't leave any lights on.
We used the car last night and didn't leave any lights on … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
I have a 2003 E320, the last couple of days a message came
i have a 2003 E320, the last couple of days a message came up on my dash "malfunction, electrical consumers switched off" - my radio stopped working yesterday and today when i went in my garage to sta… read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
3,771 satisfied customers
After I tow my smart car my transmission does not engage.
After I tow my smart car my transmission does not engage. … read more
Bart Zorchets
Bart Zorchets
1 satisfied customers
I have a GL450 2010. the malfunction message came up. Took
i have a GL450 2010. the malfunction message came up. Took it to the mechanic. He checked and ran test and said the compressor, pressure sensors, strut, etc. are all good. The two rear airbags (bellow… read more
Dan
Dan
Automotive Technician
Vocational, Technical or Trade Scho
25 satisfied customers
I have a 2010 Mercedes Benz ML350. I have an oil consumption
Hello; I have a 2010 Mercedes Benz ML350. I have an oil consumption issue, Yes its in the Turbo Inlet. I hear this is an issue with these vehicles.. I have taken apart and cleaned the PCV if you want … read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
3,771 satisfied customers
I ordered a fuel pump for my 1990 Mercedes Benz 300E the
I ordered a fuel pump for my 1990 Mercedes Benz 300E the fuel pump will not run I took the fuel pump off and hooked it up and it came on the line that the fuel pump is running too doesn't have any fiv… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,009 satisfied customers
My cup holder is stuck. That is when I press the button to
My cup holder is stuck. That is when I press the button to activate the cup holder it does not spring up. How do I fix this? Please. … read more
Marty
Marty
Mercedes Technician
Associate Degree
29,009 satisfied customers
I have an ML 270 cdi. I live in Peru and I travel frequently
I live in Peru and I travel frequently in the high altitude Andes. When I overcome the 3000 m altitude the car goes sick . And cannot advance over 2000 rpm … read more
Matt
Matt
Engineer
Bachelor's Degree
602 satisfied customers
The lift-gate is not working automatically.The latch of my
The lift-gate is not working automatically.The latch of my 450gl releases anytime I operate with the remote but the door remains down until I will manually lift it up. … read more
Bart Zorchets
Bart Zorchets
1 satisfied customers
I am having a problem with my brake line. When I install the
I am having a problem with my brake line. When I install the brand new caliper on the rear right-side of my 2001 E320 Wagon Non-4Matic, the caliper threads on fine, but stops facing the wrong directio… read more
Dan
Dan
Automotive Technician
Vocational, Technical or Trade Scho
25 satisfied customers
I have a W211 E350 2006 lately ive been having some minor
Hi i have a W211 E350 2006 lately ive been having some minor troubles , it began like 2 months ago with Alternator Serial Interface and Voltage to high And 02 sensor , i replaced the Voltage Regulator… read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
3,771 satisfied customers
350 mercades trim comg off inside. Mercades 350 trim coming
350 mercades wood trim comg off inside JA: What is the model/year of your Mercedes? Customer: mercades 350 trim coming off JA: What year is your Mercedes? Customer: 2014 JA: Are you fixing your vehicl… read more
Bart Zorchets
Bart Zorchets
1 satisfied customers
I am working on a 2008 Mercedes GL450 replaced engine car
I am working on a 2008 Mercedes GL450 replaced engine car start for fusick in and dice I have a code 2289 you can help me … read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
4,633 satisfied customers
Camshaft issue. S63 2010 WDDNG7HB3AA315103. I need to know
camshaft issue JA: What is the model/year of your Mercedes? Customer: s63 2010 WDDNG7HB3AA315103 JA: Are you fixing your vehicle yourself? What have you tried so far? Customer: I need to know if there… read more
Bart Zorchets
Bart Zorchets
1 satisfied customers
I was removing the intake manifold in my 2009 Mercedes-Benz
Hi, I was removing the intake manifold in my 2009 Mercedes-Benz E350 so I had to unplug the wiring harness while I was reconnecting everything I have one plug that I can't find where it goes , can you… read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
3,771 satisfied customers
Where will I find the fog light fuse for 2010 Mercedes c300.
Where will I find the fog light fuse for 2010 Mercedes c300 … read more
Marty
Marty
Mercedes Technician
Associate Degree
29,009 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