Please help mechanic has no idea! p062b-64, p200a-75, p2279-62, p2463-09, p2080-27 and p200a-21.

[carly pledge]

Hi all
Have a mercedes c250 diesel auto 2012. Started driving weird and eml came on. My friend plugged in an odb readand it gave 3 codes to do with fuel injector. So I got a mechanic to look and he suggested getting a full service first and resetting eml to see how it goes. So i did and eml came back on. Got told to drive it in manual up the motorway in a low gear for a while. Turned car off and back on and eml was off but came back on a few days later and has now stayed on for the last few weeks. Mechanic run diagnostic on it yesterday and it gave the codes p062b-64, p200a-75, p2279-62, p2463-09, p2080-27 and p200a-21.
Mechanic said car seems fine and he thinks all the fault codes mean the computer needs updating in my car or something. Said i should take it to mercedes but wanted to try get a second opinion. Anyone heard of this before?

 

[John Laidlaw]

welcome, and how is it actually running?

 

[carly pledge]

welcome, and how is it actually running?

Thanks john -gorgeous dog btw! It seems to be ok -seems a bit loud but dont know if thats because this is the first time I have paid attention! Ive now had two mechanics look at it and they say its fine. Im a bit clueless with cars to be honest but i did think its taking longer to pick up speed if that means anything?

 

[Blobcat]

Hello and welcome,

Mechanics can be good for a quick service but a specialist Mercedes independent can stop you spending ££££ because they'll no doubt have seen the issue before and have specific Mercedes diagnostic equipment and not a generic scanner that can't read the codes and gives random information that will have you chasing your tail.

If you post up your location you'll get some recommendations

 

[carly pledge]

Hello and welcome,

Mechanics can be good for a quick service but a specialist Mercedes independent can stop you spending ££££ because they'll no doubt have seen the issue before and have specific Mercedes diagnostic equipment and not a generic scanner that can't read the codes and gives random information that will have you chasing your tail.

If you post up your location you'll get some recommendations

Thanks im in st albans x

 

[ajlsl600]

Is it smoking from exhaust?

 

[John Laidlaw]

Wayne Gates in Harrow is well thought of....

 

[carly pledge]

Is it smoking from exhaust?

No

 

[LostKiwi]

You don't suddenly get fault codes because the ECU needs updating.

There are a number of issues.
The swirl flaps need checking.
The DPF is full.
There's an air leak on the boost side (common fault is a split boost hose).
There's a temperature sensor giving questionable readings.

This definitely should be looked at by a reputable specialist. The DPF will almost certainly need a forced regen.

Wayne Gates is a good shout.

 

[John Laidlaw]

agree with above, your mechanic was trying to get you to force a regen by driving like that, but it won't happen. It will help as a preventative measure once a month once it's all sorted out, but getting Wayne Gates to run some diagnostic and sort out will pay dividends long term

 

[Wighty]

Welwyn Merx in Welwyn Garden City is an MB Independent , possibly a bit closer . One of our members @Craiglxviii uses them

 

[John Laidlaw]

Welwyn Merx in Welwyn Garden City is an MB Independent , possibly a bit closer . One of our members @Craiglxviii uses them

good shout, forgotten about them!

 

[Wighty]

good shout, forgotten about them!

I’m a bit closer to the whole mess that is the south east , so it’s a little more familiar territory

 

[carly pledge]

Thanks all update - took it to my friend who blew it out down the motorway for me to ensure it was being done correctly (hes a petrolhead) and it definately regained some power. He turned off eml and put dpf cleaner in it and i drove it for about 45 mins in manual at 3000rpm -eml stayed off entire time. Parked up the car for a few hours and the minute i turned it back on eml was on again. So i think a trip to a specialist is on the cards. Will keep driving this weekend to see if it changes but will call first thing monday if not. Thanks for the advice really appriciate it - always feel you are getting ripped off being a single woman knowing nothing about cars!

 

[Kev555]

I had similar codes as well Carly, You will likely need a DPF temp sender replaced for starters. I like other guys in above posts recommend you take it to a Mercedes specialist as it will be the quickest and cheapest way of negotiating this possible minefield

 

[Wighty]

Thanks all update - took it to my friend who blew it out down the motorway for me to ensure it was being done correctly (hes a petrolhead) and it definately regained some power. He turned off eml and put dpf cleaner in it and i drove it for about 45 mins in manual at 3000rpm -eml stayed off entire time. Parked up the car for a few hours and the minute i turned it back on eml was on again. So i think a trip to a specialist is on the cards. Will keep driving this weekend to see if it changes but will call first thing monday if not. Thanks for the advice really appriciate it - always feel you are getting ripped off being a single woman knowing nothing about cars!

It's not just women that are at risk of getting ripped off, it's all of us . Trustworthy garages/ individuals are the best solution .
Let us know how you get on

 

[Pippen007]

Hi Carly
Definitely take it to an Merc Independent Specialist.

I had a similar issue last year with my 2010 C220CDI. Come on here for advice re EML and DPF issues.

Couldn’t understand what and why things were happening as driving had not changed. Long (800 mile) trips to France every couple of months and day to day driving of around 40 mile commute (A and B roads and then town).

took it to a local Merc specialist who didn’t have STAR diagnostics and they were a bit stumped - forced a DPF regen, replaced a few sensors. This garage was where I have always taken it for servicing (oil, filters, Brakes etc).

the issue came back within 2 days of them having done the work. So I came on here asking for advice. Took the advice and booked it in with Merc Independent Specialist with STAR. They were able to run the diagnostics within a couple of days then it was booked in the following week or so (fantastic service).

I did a little research in the meantime as well. It turned out that in the previous oil change, low ash oil had not been used (as per the invoice). So between the time of the diagnostics and the specialist having the car I completed 3 oil changes with oil filter each time over the space of a week.

the specialist then replaced 1 sensor and completed a DPF regen and software update. The car has been running fine ever since (20000 miles) and she has now done 230k miles and still going strong.

The low ash oil thing may be a red herring and all it needed was STAR. But I am very happy with the service I received. The whole issue has given me the “courage” to undertake basic maintenance on the car myself now - oil and filter (even a fuel filter change) and brake pads and discs). The pads and discs are easier on the Merc than they are on my wife’s mini and son’s Audi.......

So, take it to an Independent Specialist......
Cheers

 

[Botus]

as mentioned I'd go to these guys… Welwyn Merx in Welwyn Garden City

I can well imaging there are some software updates for this and pretty sure pump or injectors on these did play up early in the models life

there also a post to search for https://forums.mercedesclub.org.uk/...l-software-update.179539/page-11#post-1794069 re USA market cars getting a software feature pop to life, throwing codes you can't cure because "its an accidental blip putting the light on" rather than any actual fault

 

[A Brace]

Hi Carly
Definitely take it to an Merc Independent Specialist.

I had a similar issue last year with my 2010 C220CDI. Come on here for advice re EML and DPF issues.

Couldn’t understand what and why things were happening as driving had not changed. Long (800 mile) trips to France every couple of months and day to day driving of around 40 mile commute (A and B roads and then town).

took it to a local Merc specialist who didn’t have STAR diagnostics and they were a bit stumped - forced a DPF regen, replaced a few sensors. This garage was where I have always taken it for servicing (oil, filters, Brakes etc).

the issue came back within 2 days of them having done the work. So I came on here asking for advice. Took the advice and booked it in with Merc Independent Specialist with STAR. They were able to run the diagnostics within a couple of days then it was booked in the following week or so (fantastic service).

I did a little research in the meantime as well. It turned out that in the previous oil change, low ash oil had not been used (as per the invoice). So between the time of the diagnostics and the specialist having the car I completed 3 oil changes with oil filter each time over the space of a week.

the specialist then replaced 1 sensor and completed a DPF regen and software update. The car has been running fine ever since (20000 miles) and she has now done 230k miles and still going strong.

The low ash oil thing may be a red herring and all it needed was STAR. But I am very happy with the service I received. The whole issue has given me the “courage” to undertake basic maintenance on the car myself now - oil and filter (even a fuel filter change) and brake pads and discs). The pads and discs are easier on the Merc than they are on my wife’s mini and son’s Audi.......

So, take it to an Independent Specialist......
Cheers

Hi Carly
Definitely take it to an Merc Independent Specialist.

I had a similar issue last year with my 2010 C220CDI. Come on here for advice re EML and DPF issues.

Couldn’t understand what and why things were happening as driving had not changed. Long (800 mile) trips to France every couple of months and day to day driving of around 40 mile commute (A and B roads and then town).

took it to a local Merc specialist who didn’t have STAR diagnostics and they were a bit stumped - forced a DPF regen, replaced a few sensors. This garage was where I have always taken it for servicing (oil, filters, Brakes etc).

the issue came back within 2 days of them having done the work. So I came on here asking for advice. Took the advice and booked it in with Merc Independent Specialist with STAR. They were able to run the diagnostics within a couple of days then it was booked in the following week or so (fantastic service).

I did a little research in the meantime as well. It turned out that in the previous oil change, low ash oil had not been used (as per the invoice). So between the time of the diagnostics and the specialist having the car I completed 3 oil changes with oil filter each time over the space of a week.

the specialist then replaced 1 sensor and completed a DPF regen and software update. The car has been running fine ever since (20000 miles) and she has now done 230k miles and still going strong.

The low ash oil thing may be a red herring and all it needed was STAR. But I am very happy with the service I received. The whole issue has given me the “courage” to undertake basic maintenance on the car myself now - oil and filter (even a fuel filter change) and brake pads and discs). The pads and discs are easier on the Merc than they are on my wife’s mini and son’s Audi.......

So, take it to an Independent Specialist......
Cheers

Hi Carly
Definitely take it to an Merc Independent Specialist.

I had a similar issue last year with my 2010 C220CDI. Come on here for advice re EML and DPF issues.

Couldn’t understand what and why things were happening as driving had not changed. Long (800 mile) trips to France every couple of months and day to day driving of around 40 mile commute (A and B roads and then town).

took it to a local Merc specialist who didn’t have STAR diagnostics and they were a bit stumped - forced a DPF regen, replaced a few sensors. This garage was where I have always taken it for servicing (oil, filters, Brakes etc).

the issue came back within 2 days of them having done the work. So I came on here asking for advice. Took the advice and booked it in with Merc Independent Specialist with STAR. They were able to run the diagnostics within a couple of days then it was booked in the following week or so (fantastic service).

I did a little research in the meantime as well. It turned out that in the previous oil change, low ash oil had not been used (as per the invoice). So between the time of the diagnostics and the specialist having the car I completed 3 oil changes with oil filter each time over the space of a week.

the specialist then replaced 1 sensor and completed a DPF regen and software update. The car has been running fine ever since (20000 miles) and she has now done 230k miles and still going strong.

The low ash oil thing may be a red herring and all it needed was STAR. But I am very happy with the service I received. The whole issue has given me the “courage” to undertake basic maintenance on the car myself now - oil and filter (even a fuel filter change) and brake pads and discs). The pads and discs are easier on the Merc than they are on my wife’s mini and son’s Audi.......

So, take it to an Independent Specialist......
Cheers

 

[Botus]

I think the title of this post is wrong, from what I read he was spot on !!!... and there's possibly one to fix the clock u need as well

2012 204 C class....

Daimler AG ("DAG"), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year ("MY") 2012-2014 Mercedes-Benz vehicles of various models (204 platforms) the software of the Engine Electronics Control Unit ("ECU") may not meet production specifications, which could result in a Malfunction Indicator Light being displayed while no fault is present in the control unit. An authorized Mercedes-Benz dealer will update the engine ECU software for the affected vehicles.

C-Class (204) due to a software fault in the communication module as provided by the supplier, the date and time as determined from the GPS satellite data could differ from the actual date and time starting on November 4, 2019. The correct date and time are necessary for the "Assisted-GPS" function to determine the vehicle position. Dealer will update communication module software