Lee_

Hi,

Engine: 250CDI (651924)
Year: 2010

Experiencing limp mode recently - so I read the codes and got the below:

1. P246397 The soot content of the diesel or gasoline particulate filter is not OK. The system function is restricted.
   1. I suspect this is cause by the below - I'll do a force regen once I've replaced the intake pipes.
2. P227985 A leak was detected in the intake air system. There is a signal above the permissible limit value.
   1. I've found a split in the intercooler pipes
3. P019664 Engine oil temperature sensor 1 has a malfunction. There is an implausible signal.
4. P033900 Position sensor 1 for the crankshaft has a sporadic malfunction.

Question - where is the oil temp sensor and crankshaft sensor on this engine? A lot of wires and pipes and struggling to see.

I also got these codes form the COMMAND system

1. 9468 Speaker channel 2 has an open circuit.
   1. Is channel 2 the passenger front on a W212?
2. 9422 There is an internal fault in the CD/DVD drive.
   1. Assuming this will be a replacement if I want to fix?

chassis

Crank sensors is in the standard MB location: 10 o’clock as viewed from the driver’s seat, at the junction between transmission housing and engine block.

Buy only OEM MB parts from the dealer for this.

kajtek1

Oil temp sensor usually is pigyback on level sensor, so look on the side of oil pan.
As for DPF, do you have monitoring scanner? What's the % ? and how old is it?
I think oil temp malfunction can prevent DPF regeneration ,so do it ASAP as DPF filled above 200% will bring you lot of additional headaches.