check engine light

[Eco Bob]

I started my truck and I had a check engine light. I went to a auto parts store to have it checked. There was a code # U0100 loss of communication. I started the truck up and the code was gone. I have driven the truck and started and stopped it least 6 or 8 times and no light. Has anyone had this problem?

 

[Eco Bob]

This is a 2020 Ram 1500 Eco diesel with 23000 miles.

 

[Roy Theagali]

UO100 has to do with the canbus communication it looks like you have dirty battery poles connection or a failing battery have it load tested also look at the small wires connected to the battery poles

 

[gearl]

I started my truck and I had a check engine light. I went to a auto parts store to have it checked. There was a code # U0100 loss of communication. I started the truck up and the code was gone. I have driven the truck and started and stopped it least 6 or 8 times and no light. Has anyone had this problem?

My check engine light is on code P0191 fuel rail sensor is this covered under settlement

 

[gearl]

Took my Ram 1500 diesel eco and had all my recalls taken cared of but my check engine light was on code P0191 Fuel Rail sensor I was wondering if this part is covered under Eco settlement

 

[Eco Bob]

UO100 has to do with the canbus communication it looks like you have dirty battery poles connection or a failing battery have it load tested also look at the small wires connected to the battery poles

Thanks for the info. I will do that

 

[Roy Theagali]

Thanks for the info. I will do that

Let me know what you find