Hi All,

 

Owner of a 2012 1.6tdi Yeti. Just ticked over 153k miles. Has been great up untill recently. 

 

Glow plug engine light combination lit up the dash early this year, diagnosed as dpf so went to have this cleaned by a company in Luton, done the job lights went out car has been fine since. About a month ago dash lights up again with coil  and engine light this time I had my own obd eleven device, i ran a scan and codes came up as glow plugs, replaced all 4 cleared codes and was back to motoring happiness.

 

A few days ago the dash lit up with coil, engine and dpf light again. This time I ran diagnostics and it came up with code P2458 - Particulate filter regeneration duration bank 1.

 

Soot and ash load all look normal. Anyone able to help? Done some searching on the net with not much joy.

 

Thanks in advance.

 

 

That code refers to the DPF unable to complete a full regeneration. It could be a faulty pressure sensor or  associated wiring or it could be a blocked DPF. You could first try a forced regeneration of the DPF it may or may not work.

Edited 6 December, 20205 yr by skoman

Hi Skoman,

 

Thanks for the reply.

 

The measurements off of my obd eleven are below -

 

Oil ash volume - 2.04g

Soot mass measured - 0.44g

Soot mass calculated  - 18g

 

Do you know if I can force a regen with obdeleven?

 

Thanks

 

 

 

 

Yes I believe you can.

 

Make sure you have at least 1/4 tank of fuel &
Handbrake is ON
Start engine & plug in the OBD eleven- do a scan and clear any engine error codes
In '01 Engine' select 'Change Service' and then select 'EOL' (end of assembly line) mode
Login using code: 27971
In 'Basic settings' scroll down & select 'Service regeneration of particulate filter'
Press the green button for several seconds- ignore red error message
Switch off engine- but leave key in & ignition ON
Restart engine and go back to 'Change Service' and select 'EOL'- using same code
In Basic settings scroll back down to 'Service regeneration of particulate filter'
Press green button again for a few seconds- which may turn from green to grey- ignore red error message then
Firmly press brake pedal for a couple of seconds and then let go & gently press the accelerator pedal and the revs should gradually climb on their own to 2000 rpm.
The OBD will now have a red STOP icon on your screen- you can press this if you need to abort the process at any time as it takes a while..
Now simply leave the engine for as long as it is revving it will drop to 1100 rpm after a period of time- but continue to leave it at 1100 rpm for another 10 mins or so, or until the revs drop to normal 600 rpm and the Red STOP icon is no longer showiing.
Finally, Run a new error scan and clear any new fault codes.

 

Let  me know how you get on

Are you able to look up the Differential pressure sensor readings? With the ignition on but engine off the reading should be zero and when the engine is running you should see it start to climb.

Hi Skoman 

 

I will try to get the readings and attempt regen as per the instructions you have sent. Really appreciate it. Thanks

@skoman are you available for a diagnosis? Thanks