Hi I have a 2012 2500 ram mega cab 5.7eng. the asb light and service 4 whl drive light came on. i put scanner on it said abs sencer was bad in both back wheels i change them out. drove truck all lights went
off shut truck off. started back up the lights came back on till i drove the truck around the block they went off i pulled over .shut truck of the lights came back on till i drove it around again. any idea

 

Wonder if you need to clear those codes? Theoretically, they should clear themselves once the issue they are whining about goes away..... Both rear sensor failing at the same time though? That is unlikely in the extreme... might wanna have a look at the wiring to the rear sensors.

 

it's kinda weird start it there on drive it and with in maybe 5 min they go out. thank you will try clearing the codes.thank you