Help..
code p242f
dpf diesel oxy cat
particulate filter
restricted
dpf converter
What can be done to solve this problem?
How to override computer from "limp in" mode
How can I clear it and clean it?

The code exists because the differential pressure sensor monitoring exhaust pressure before and after particulate filter indicates substantial difference. The problem could be the sensor, hoses, wiring, or a restricted filter. You can check for problems with the hoses and lines and check for continuity between the ecm and sensor. Cleaning is performed by engaging a Diesel Particulate Filter Regeneration procedure through the scantool. If that doesn't work the service manual advises a new filter is needed. No default conditions such as "limp in" are listed, but a highly restricted exhaust will cause substantial loss in power.

HTH

thanks for the info.
the mech said that we will need to buy a new part ($3000.00)
is there any way to accurately diagnose the component.
they said that it will need replace every 40,000 to 60,000 miles.
How much should the component cost and how much should the test
to override the computer with a scan tool cost?
any input is welcome.

Sounds like you need a different mechanic.

__________________
-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)

60,000 miles seems to be less than expected mileage before DPF issues begin. Driving habits and improper oil/fuel appear to be major contributors to early DPF plugging.

The forced regeneration procedure should be tried before replacement. Your mechanic will likely need a dealership level diagnostic tool to achieve this.

I have no time in our estimating software for a DPF regeneration on the vehicle. Labor rates will vary based on region and individual shop. I'd guess 2hrs based on reading the instructions but real world experience may dictate more time.

There are commercial truck repair centers that will clean DPF's off the vehicle. Cost appears to be $500 to $1000 with many factors affecting price.

Our fleet does not yet have DPF worries so I haven't had to come up with practical solutions to these problems. Any information I've relayed has been from reading service information or from using an internet search engine.