Truck:
2003 Cummins 3500 Dually

hey guys,

This past week while driving back from a job site, I had a chime go off and the Brake light and ABS light came on. Now, the engine light is also on. All three lights are constantly on now once started. I searched online and came across that replacing the speed sensor on top of the rear differential and unplugging the battery after the replacement for 2 minutes would fix it. Has anyone had this happen before?
Thanks!

 

turn your key on/off three times i believe and it will show you the code in your mileage digital readout and that should tell you exactly what it is.

 

It gave me two codes, P0237 and P0483.
Took it for a spin right now and noticed that my turbo is not kicking in and my Edge Comp Module is turned off.

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I was able to get the Edge turned on and my turbo is working... still getting the same codes. P0237 is for turbocharger boost pressure low. While I took it for a spin, I noticed the Edge reading turbo boost at 28 and 90% load.
P0483 is for cooling fan speed, but did not notice anything wrong with the temps. Not sure what's going on or if something triggered these two codes like the Edge. I unplugged the positives from the battery for a couple of minutes but the codes still come on. Please advise.

 

it could possibly be your rear abs speed sensor on top of the rear dif

 

I found the same suggestion online, but given that I obtained those codes I turned my attention away from it. It's weird that I get both codes at the same time. Thanks for the tip.

 

i had the brake and abs light do that on my 02 a while back and the sensor was the problem... but also on my 1990 the same thing happened but i had to replace the sensor on the diff and also had to replace the sproket lookin thing (whatever its called) inside the diff thats bolted between the ring gear and my locker to get the lights to go away