Car loses all power limps couple hundred yards, glow plug light on, turn off then on again, glow plug light now off. Drives hundred yards very low power then stalls. Car will then only start for a few seconds.

Garage diagnosed completely blocked DPF. I'm wondering why no DPF warning lights. Is this likely caused by failed sensors preventing regent and not triggering warning light? Any other likely causes?

 

UPDATE: dpf delete at Shark and all tickety-boo

Edited 29 January, 201511 yr by davew255

The glow plug light will log a fault code.

If it is in fact a blocked DPF then something is seriously amiss somewhere.

You will get the DPF light first, then if nothing is done to regen the DPF you then get the EML and flashing glow plug lights plus limp-home mode.

Even at this point it is possible to do a forced regen to clear it.

Something has gone very wrong somewhere. How many miles has the DPF done?

About 120k. I've had DPF warning light a couple of times a fair while back and motorway drive has cleared it. I did do a ash / soot check with vcds back then and was OK (not got figures to hand). 

Just checked a VCDS log I did while waiting for the recovery truck.  Stupidly didnt check the log at the time and trusted the garage that no error codes.  Found I've got an error log:

 

000665 - Boost Pressure Regulation 

               P0299 - 000 - Control Range Not Reached

             Freeze Frame:

                    Fault Status: 01100000

                    Fault Priority: 2

                    Fault Frequency: 1

                    Reset counter: 255

                    Mileage: 189992 km

                    Time Indication: 0

                    Date: 2014.12.16

                    Time: 09:32:51

 

             Freeze Frame:

                    RPM: 2392 /min

                    Speed: 36.0 km/h

                    Load: 56.1 %

                    Absolute Pres.: 1938.0 mbar

                    Absolute Pres.: 1060.8 mbar

                    Lambda: 98.6 %

                    Lambda: 97.8 %

 

 

 

Also checked my DPF levels from old scans:

 

11th May 2014:

22:06:33 Group 108: Diesel Particle Filter

  108 ml  Particle Filter Oil Ash Volume

  18.6  Particle Filter Carbon Mass (spec.)

  18.0  Particle Filter Carbon Mass (act.)

 

30th April 2014

21:40:28 Group 108: Diesel Particle Filter

  108 ml  Particle Filter Oil Ash Volume

  10.8  Particle Filter Carbon Mass (spec.)

  19.5  Particle Filter Carbon Mass (act.)

 

Probably done 7k of mixed driving since without a dpf warning light though have noticed a regen or 2 (including quite recently)

Edited 8 January, 201511 yr by davew255

http://wiki.ross-tech.com/wiki/index.php/16683/P0299/000665