2012 E350 CDI limp mode

[Sr108]

So the other day I was driving with gearbox in manual mode when it suddenly went into 6th gear I think and got stuck there , I couldn't change it with the paddles.. then after that it was changing gears by itself but there was hardly any power like in limp mode or something . The next day I went out and it was fine at first but then again it did the same thing , 3rd day same again .. at first it's fine and engine revs up to about 2k or more before changing gear but then after a while something happens and it changes gears at alot lower revs and there's no power .. help !!??

Edit : just had diagnostic done , have attached pic .

 

[Larkone]

Limp mode - you need to get any codes read - is the EML on? Possibly a trip to a good indy, post your location so someone can recommend

 

[Sr108]

Limp mode - you need to get any codes read - is the EML on?

EML came on a few weeks ago but this problem with the gears only strated a couple days ago

 

[Larkone]

Still need to get the codes read

 

[Sr108]

Limp mode - you need to get any codes read - is the EML on? Possibly a trip to a good indy, post your location so someone can recommend

Yeah gonna take it to a guy on Monday hopefully

 

[malcolm E53 AMG]

Probably low trans fluid or the gearbox needs a service:

Strange Gearbox Issue/Limp mode

Hi Everyone, just looking for a bit of advice on an issue that came up today, before I take it to a garage to get looked at. 90 miles into a 100 mile journey, I was on the motorway in manual mode (e350cdi 2012), when the car changed up into 7th on it's own at about 50mph, and wouldn't change...

forums.mercedesclub.org.uk

 

[Sr108]

Probably low trans fluid or the gearbox needs a service:

Strange Gearbox Issue/Limp mode

Hi Everyone, just looking for a bit of advice on an issue that came up today, before I take it to a garage to get looked at. 90 miles into a 100 mile journey, I was on the motorway in manual mode (e350cdi 2012), when the car changed up into 7th on it's own at about 50mph, and wouldn't change...

forums.mercedesclub.org.uk

Have posted pic above of diagnostic ..

 

[Mr Greedy]

There seem to have been a dozen or more posts across forums in the past couple if months with exhaust/DPF pressure sensor issues on these w212s (I have one and had very similar errors and symptoms to the OP).

Could a sudden surge in these errors/symptoms all be due to an as yet unknown common issue? i.e. a change in fuel we are not aware of?

OP, if it is the DPF pressure sensor, it's about £65 for Merc genuine and an Indy would change it in under an hour. Get them to check codes and this might be a popular first try for resolution due to ease, time and low cost?

 

[Sr108]

So the other day I was driving with gearbox in manual mode when it suddenly went into 6th gear I think and got stuck there , I couldn't change it with the paddles.. then after that it was changing gears by itself but there was hardly any power like in limp mode or something . The next day I went out and it was fine at first but then again it did the same thing , 3rd day same again .. at first it's fine and engine revs up to about 2k or more before changing gear but then after a while something happens and it changes gears at alot lower revs and there's no power .. help !!??

I had diagnostic done today ( pic attached ) I went and got some dpf cleaner , put it in the tank and went for a drive on motorway for about 25 miles .. cars been alright today but just as I was coming off the motorway it went into the limp mode again ..

 

[onefortheroad]

Dpf pressure sensor , nailed on

 

[Sr108]

Dpf pressure sensor , nailed on

What you mean nailed on? Also what about the other codes ?

 

[onefortheroad]

What you mean nailed on? Also what about the other codes ?

Most likely will be dpf pressure sensor, the other codes are piggybacking the dpf pressure sensor fault.

 

[malcolm E53 AMG]

If it is the DPF pressure sensor it’s worth watching this video:

DPF fault and remedy on OM642

Interesting watch on how to clean a DPF and replace the pressure sensor on the OM642

forums.mercedesclub.org.uk

 

[Sr108]

Most likely will be dpf pressure sensor, the other codes are piggybacking the dpf pressure sensor fault.

Any way to know for sure ? Also what about the other fault , the control module thing ?

 

[onefortheroad]

Any way to know for sure ? Also what about the other fault , the control module thing ?

Get the live data for it with engine running .

https://www.engine-codes.com/p0607_mercedes-benz.html

 

[Sr108]

Get the live data for it with engine running .

https://www.engine-codes.com/p0607_mercedes-benz.html

I meant how can I know if the sensor is faulty or if the sensor is actually ok but the dpf actually does need cleaning ? Do you think the other control module fault is because of the dpf issue or it’s something separate ?

 

[onefortheroad]

I meant how can I know if the sensor is faulty or if the sensor is actually ok but the dpf actually does need cleaning ? Do you think the other control module fault is because of the dpf issue or it’s something separate ?

Get live data for the dpf sensor . It should be around + or - 0.4 .

Sort this issue the rest possibly will disappear.

 

[Sr108]

Get live data for the dpf sensor . It should be around + or - 0.4 .

Sort this issue the rest possibly will disappear.

How do I get live data ? Sorry never done this before ..

 

[onefortheroad]

How do I get live data ? Sorry never done this before ..

Use the scanner that found the other faults .

 

[Sr108]

Use the scanner that found the other faults .

That was at a mechanic who charged me £30 just to plug it in and get the codes for like 2 mins .. not sure if he even knows how to get live data for the sensor ..