Mercedes C320 CDI (W203 2006 - Error P2616 - temporary lack of engine power

Hello

A few days ago I repaired the turbine adjuster, which was in a terrible condition (apparently) and returned error P0244.

A few days ago, the first time after starting the engine, the car sharply accelerated and this time error P2616 jumped out but the car "as if" did not lose power permanently and did not enter the emergency mode.

The TorquePro application indicates one only error "P2616 - Check Component B60 (exhaust back pressure sensor control variation). Exhaust back pressure is too high" (on SD it is confirmed that this is a sensor and no other errors) and the car drives as normal , normal combustion, sometimes - once, maybe twice a day he happens to "muddy" (as if the turbo did not turn on - but there are no errors from the turbine) and it drives and accelerates as it should.

On the MB website they exchanged the B60 sensor for "their service" for a test on Friday morning and two days was calm but yesterday evening (on Sunday, three days later) the error appeared again and the symptom was temporary silence.

Answering any questions:
- the car starts very nice and quiet
- the engine runs evenly without unnecessary noise
- doesn't kick
- the box works very evenly and not perceptibly

I would add that this problem appeared after flooding the engine with oil from a cracked fuel line and cleaning it with some "solvent" that stank with acetone


I also provide VIN of the car: WDB2032201F768521
The engine designation is OM642

Check the exhaust pressure, maybe there is a mess under the sensor.

Strange - because for three hours they have been diagnosing a car in a plant specializing in Mercedes and they can not find anything

P2616 OBD2 reports a sensor fault, replacement of the sensor is unlikely to resolve the underlying problem. The fault is most likely to be caused by the systems that the sensor is monitoring, but might even be caused by the wiring to the sensor itself.

Buddy xsqr I have a question if the problem is solved if so what was the cause? I have the same problem after leaking the fuel hose from the long and short filter and after replacing them, the car once has power, once the regulator has not been checked, it works correctly, the turbine is also in good condition (some oil releases, but it has little looseness). I will add that my car is a Mercedes w211 from 2005 om642.920 V6 224km 3.0 CDI.

Damaged sensor.

Can you tell me more precisely or give me the number of this sensor?

Some time has passed but have you solved this problem and how?

Hello, I have the same problem with W211 3.0 v 6 with a vigorous addition of gas jerk and either goes or goes into emergency mode
I am looking for answers on forums there are a lot of cases of this fault but zero solution please help if someone has already repaired his Mercedes

Of course, I join the question and wait for help (W209, CDI 320)

the pulled chain can cause this, you need to replace the timing.

I replaced the turbo zero adjuster, then dismantled the manifolds, cleaned and reconditioned the cables without result, I replaced the flap actuator and it was fine for a month now the same today I changed the exhaust sensor EGR wheel but connected to the outside of the engine the old one was in place, the car gently jerked but about 60 percent of power after screwing the moment was good and again the replay of entertainment and what you greet everyone

Added after 1 [hours] 48 [minutes]:

The chain falls off I have 250,000 raid from which I made 50,000 and the fault I have from the beginning as I bought it in 2016 twice and I can fly 1000 km without a problem on the computer error 2616 sensor against exhaust pressure pressure difference too low I focus on something related to the air charge or with the catalyst maybe a little clogged. Strange that many people have the same problem and symptoms must be some standard fault like a seal under the oil cooler

For me the chain ended at 200tkm, the tensioner was not able to tension it anymore (duplex chain) OM642.
From what I observed in my, and everything falls in this engine in turn (Folded in the USA),
this engine jerking during acceleration only causes incorrect boost pressure.
The first time it was a collapsed dpf, and the second it was cracked wires in the turbo adjuster.
And here you can see through the oil filler plug the tensioner extended to the max (200tkm)
DSC_05..JPG Download (2.83 MB)

Hello, my 211 does not have DPF I only have a catalyst so it came out of the factory originally for me strange that so many people have the same problem with the car that has DPF or hangman but I agree that it is about charging something I bet that something with flaps, because the owners of Sprinter with this engine they don't have such a problem and they have the same engine only without flaps.
best regards

I had one side of the flaps unfastened in a closed position and this did not cause jerking.
Unscrewed oil filler cap does not jump on a warm engine?

Hello, maybe someone knows if the spring from the flap motor keeps the flaps open or closed

Robi 405 wrote:

Hello, maybe someone knows if the spring from the flap motor keeps the flaps open or closed

Holds open.

Thank you I will check what will happen when the old engine is connected to the outside and the flaps will be open all the time. Regards

I removed the flaps and it didn't help. It's just like before. The oil cooler is also sealed

Hello, anyone has any idea what to go about? For now I will buy another turbo with an adjuster and I will test what is happening

Don't forget to write how you can fix the problem

Hello, I was after the turbine and the owner of the company checked the turbo says that with the turbine everything is okay, such symptoms give a damaged exhaust gas sensor with the EGR I ordered the sensor and I will test also said that you need to check the exhaust manifolds, the seal at the turbine and the plastic connecting the turbo with filters are tight I'll let you know what's happening. Regards

Additionally, the sensor error under the accelerator pedal began to appear

Gentlemen, the exhaust sensor has arrived, yesterday I set up and today I drove the route to Poznan knock in unpainted for now regards regards

Let me know in a week or so

Hello gentlemen, the joy did not last long this morning, the replay of entertainment, but there is an improvement jerks lightly and smoothly and if I turn it on gently it is going normal in a moment. No ideas, best regards

hello Mercedes w211 2616. I have solved the code problem. The hole of the b60 sensor is clogged, not the sensor, but the hole where it is mounted. After 2 months of work, the malfunction came out of here....