Mercedes

Have Mercedes questions? Ask a mechanic for answers ASAP

Ask an Expert,
Get an Answer ASAP!

This answer was rated:

Engine light code po128. No code is po128. 2009 c300

Engine light code po128 ...

Engine light code po128

Mechanic's Assistant: Has your vehicle stalled? Has anyone run a diagnostic test to pull the trouble code?

No code is po128

Mechanic's Assistant: What is the model/year of your Mercedes?

2009 c300

Mechanic's Assistant: Are you fixing your C300 yourself? What have you tried so far?

Yes

Show More
Show Less
Ask Your Own Mercedes Question
Answered in 7 minutes by:
11/18/2017
Dan
Dan, Technician
Category: Mercedes
Satisfied Customers: 25,766
Experience: Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
Verified

Hello, my name is ***** ***** I'm here to help get your problem solved.

Ask Your Own Mercedes Question

This code means the engine is taking too long to warm up which can be caused by a failing thermostat or coolant temp sensor, the thermostat is the most common of the two. I would recommend replacing thermostat with a OEM part. This would be around a $300-$400 job at a shop depending on where you go. Let me know if you have more questions or if there is anything else I can do to help. Thanks.

Ask Your Own Mercedes Question
Customer reply replied 6 months ago
thanks

No problem, I'm happy to help. Let me know if there is anything else I can do, thanks.

Ask Your Own Mercedes Question

Ever get problem figured out? Please do not forget to rate answer. Thanks.

Dan
Dan, Technician
Category: Mercedes
Satisfied Customers: 25,766
Experience: Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
Verified
Dan and 87 other Mercedes Specialists are ready to help you
Ask your own question now
Was this answer helpful?
Ask Dan Your Own Question
Dan
Dan
Dan, Technician
Category: Mercedes
Satisfied Customers: 25,766
25,766 Satisfied Customers
Experience: Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database

Dan 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
It will not start. Not the battery. 2015 C300. I checked the
yes I want to know if there is a way to take of th safe mode… read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
3,771 satisfied customers
My C300 says key being initialised Please wait... i have
Hi My C300 says key being initialised Please wait... i have waited for hours, any ideas on what is happening...? I have changed the battery keys. … read more
eric remington
eric remington
FORMER SHOP OWNER/TECHNICIAN/INSPECTOR
associates degree
561 satisfied customers
I have purchase a 2017 C300 coupe this past year and have
I have purchase a 2017 C300 coupe this past year and have had it now for 11 months. From day one there have been issues with the wipers. Bouncing across windshield and very noisy. They have been repla… read more
eric remington
eric remington
FORMER SHOP OWNER/TECHNICIAN/INSPECTOR
associates degree
561 satisfied customers
I have a 2008 mercedes benz c300 and I'm getting the p0410
I have a 2008 mercedes benz c300 and I'm getting the p0410 after I have already replaced the air pump. My mechanic is saying he thinks we need to replace the intake.. But that's not the code. I want h… read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
3,771 satisfied customers
I have a warning light in a c300 2009. It shows a skid mark
No. But the mechanic couldn't get the light to come on when he drove it.… read more
Wolfgang
Wolfgang
7 satisfied customers
2011 C300. Smokes at start. 83000, recently serviced. This
2011 C300. Smokes at start JA: How many miles are on the car? Have you been losing oil or coolant? Customer: 83000, recently serviced JA: Are you fixing your C300 yourself? What have you tried so far?… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
I have a 2008 c300. The heater blower is not working at any
I have a 2008 c300. The heater blower is not working at any speeds. So far have pulled the blower and checked it ran when connect to 12v. Pulled the resistor and saw no heat damage. Now looking for fu… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,009 satisfied customers
I have a 2014 C300 blower motor stopped working I have no
Hi, I have a 2014 C300 blower motor stopped working I have no power to the motor...where is the fuse? I checked my fuse map but nothing on it says blower motor. … read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
I recently bought a 2015 C300 and the Multimedia system
I recently bought a 2015 C300 and the Multimedia system (Navigation, Radio, etc). is not working. The dealership (not an MB dealership) said they spoke to a Benz dealership and apparently there is a p… read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
3,771 satisfied customers
2015 c300 4matic displays "device unavailable" on the
2015 c300 4matic displays "device unavailable" on the screen. Has radio sound and touchpad works … read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
3,771 satisfied customers
2011 c300 wddgf5eb7br152575 The car was driven to work no
2011 c300 wddgf5eb7br152575The car was driven to work no problems after shift key fob unlocks car when is inserted and turned no lamps come on and no crank. Power windows don't work and head lamp won'… read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
3,771 satisfied customers
Getting device not available on command center. C300 2015.
getting device not available on command center JA: What is the model/year of your Mercedes? Customer: c300 2015 JA: Are you fixing your C300 yourself? What have you tried so far? Customer: turning the… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Srs malfunction light on and wont start. 2008 c300. Nothing.
srs malfunction light on and wont start JA: Do you have the trouble code? Do you have a code reader or scan tool? Customer: no JA: Not a problem. You can work with the Mercedes Mechanic to figure that… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,009 satisfied customers
Unbalaced drive shaft. 2009 c300. And rotating the drive
i tried replacing the flex disc and that's how I came upon this problem… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,009 satisfied customers
I have a 2011 c300, not starting. Not the battery starter or
Hello. I have a 2011 c300, not starting. Not the battery starter or alternator (according to O'Reilly's Auto Parts). Everything inside still comes on except the horn. When the key is removed there's a… read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
3,771 satisfied customers
Have a 2011 C300, drove it in the garage turned it off.
Have a 2011 C300, drove it in the garage turned it off. After about an hour went back out and it wouldn't start. All of the lights on the dash register, i.e. fuel gauge, temperature, but will not cran… read more
BOBBYSS
BOBBYSS
TECHNICIAN/ADVISOR
Associate Degree
8,343 satisfied customers
I have a new c300 2018 want to know how to disble the
I have a new c300 2018 want to know how to disble the location app so no one knows where I am ? … read more
Wolfgang
Wolfgang
7 satisfied customers
How to charge a dead battery on a C300. No light come on.
Yes, I just opened the hood. I have a battery charger. … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 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