Discussion:
Code T248

after using for a few minutes this code appears and this unit is not drivable. Engine also surges sometimes and when the engine just standing and idling it sounds like the injector timimg changes cause it gets loud like injector knock for 30 seconds or so and then normal for awhile and just gets loud and then quiet again. Any ideas.
Darren
  • Posted 19 Apr 2012 07:42
  • By darren
  • joined 29 Apr'09 - 14 messages
  • Manitoba, Canada
Showing items 1 - 5 of 5 results.
I have seen quite a few of these and it is always the flywheel ring gear. Doesn't take much damage at all to throw that code and kill the truck.
  • Posted 1 Jun 2012 13:43
  • By chilidawg
  • joined 1 Jun'12 - 10 messages
  • Georgia, United States
you need to check ring gear has no missing/damaged teeth all the way round,turn engine from crank and look in to hole that sensor sits in if any missing it a new ring gear and starter.we do loads every year.
  • Posted 21 Apr 2012 05:00
  • By russell_r
  • joined 21 Apr'12 - 6 messages
  • cheshire, United Kingdom
Hi Darren
T246 - Speed sensing fault.
That is the diagnosis info for that fault code.
  • Posted 20 Apr 2012 19:53
  • By micky_h
  • joined 26 May'11 - 205 messages
  • South Elmsall, United Kingdom
Thanks Micky,
The error code that appears when it stops driving is T248. What does this code mean?
Darren
  • Posted 20 Apr 2012 01:34
  • By darren
  • joined 29 Apr'09 - 14 messages
  • Manitoba, Canada
Hi Darren,
Sounds like you have a flywheel actual engine speed sensor fault.
You need to check for any damage to the sensor or wiring and need to check the sensor to flywheel ring gear clearance which should be 0.5mm.
If you require any more info please ask.

Micky
  • Posted 19 Apr 2012 23:22
  • By micky_h
  • joined 26 May'11 - 205 messages
  • South Elmsall, United Kingdom

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