HY STEVE,

i hope you can help me as i see you hava e loot of experience. i hav MB B200CDI,W246, year 2013. I have error code P025218. When i erase the code, car goes ok for 10 miles, and then engine light goes ON again, and I have the same error code : the output for the quantity control valve has malfunction. Otherwise motor is runing smothly without shaking or strange noise, only the power is reduced.
Can you please give me some advise.

Thank you in advance.

A really thorough assessment and description of the work involved including useful tips – well done!

Thanks for the detailed discrimination of your problem,I have the exact same issue on my 07 ml,but it happened in the south of France but I managed to get home by constantly turning car off and on.
I wil now know where to look thanks to your story.

Thank you for taking the time to post this turbo fault info.

Hi, if we replace the entire mirror with the IR receiver in it, is any programming needed (if mirror is new or used) or do we just have to sync it with current keys, does anyone know?

Hi There Thanks for the info . My 2005 om647 turn signal lights just suddenly stopped working all other lights are working fine . Im going to swapp the wiper and turn relays and see what happens

Hi, so you used auto trans fluid in a manual? Is that the fluid in the pic?

Hello!

I have a 2005 T1N Sprinter. I’m intermittently getting error code 2526-1 and 2526-2 ‘Component Y100 (Boost Pressure regulator) is faulty. Short circuit to ground(2)/battery(1).’

It throws the Sprinter into limp mode. If I erase the code, I get my boost pressure back until it happens again.

I cannot find this part or information on how to diagnosis this error. It seems electrical. I suspect a dealership or mechanic will want to replace the entire turbo, so I’m trying to get information on other things to try.

Thank you.

Hello everyone, just wondering if anyone here could help me. Same old low boost pressure. Sprinter 314, 906 2017, engine 651, inline 4.

Looks like my variable vanes on turbo do not move when rpm increases. That would explain high exhaust back pressure at high rpm , 3500hPa.

The vacuum lines are ok. The vanes move into position when I start the engine and stay there all the time, regardless of the rpm. I even attached a camera and drove, the vanes didn’t move. They only move when I start and stop the engine.

The turbo switch (transducer) receives the signal. 12v at idle than gradually drops to 4.5v at 3000rpm but the vanes are not moving. I have replaced the turbo switch and it’s still the same.

When at high revs I can pull the linkage with my hand into open position where it should be but it still returns back to closed.

When at low revs I can’t pull it as vacuum is holding it.

The spring and the diaphragm are ok. It seems to me that the signal to the transducer is not correct, not dropping voltage enough or frequency modulation is not correct. There seem to be no vane position sensor. Could be another sensor somewhere not working properly perhaps.

Please advise, thanks very much.

I have a 2017 Thor Citation 24 SS on a 2017 Sprinter chassis. I have a RH turn signal blinking very fast and the LH is normal speed. It also has a “RH Warning” symbol on the dash panel. I’ve looked at all the fuses under the dash board and drivers side panel, no bad fuses. All bulbs are flashing when I turn on the signal, no bad bulbs, the hazard lights work properly as well. Any other ideas or areas to check?