Hello, I have a problem - sprinter 906 2.2 cdi 313 biturbo engine 646. Earlier history of the car unknown, after the purchase there was a problem with top-up, too low pressure and fell into emergency mode after about 10 seconds of loading, regardless of whether it was loaded or empty, under a larger or smaller downhill - it was enough to release the gas pedal every 7 seconds and it was ok, it did not fall into an emergency at all. while the turbines were working at max. a hissing sound was heard, after tightly sealing the intake system, the hissing did not stop, but it stopped falling into the emergency mode, after that I did not check the actual values. after taking about 700km, it turned on again, this time, however, the engine started to blink and did not respond to reset - i.e. after turning off the engine it did not reset, it was emergency right after firing, I drove about 100km, The diagnostics error 2641-008 B60 (Exhaus back pressure sensor) - Plausibility error. After adaptation of the flow, the error turned into discontinuous and the turbines started to work, however, as if not completely, up to 3.5 thousand revs sometimes it was dragging to the end, but as it could not, today I replaced the dpf pressure difference sensor. after erasing errors and a gentle test, the engine light went out, after driving it, it sometimes blinks sometimes it blinks, however, after turning off the ignition, it turns off emergency, there is no difference after changing the dpf sensor, still it would touch it and error 2641 repeats constantly. I have no idea what to do next, maybe a clogged dpf?
