Ram 1500
U0420
The U0420 code indicates an invalid data received from the vehicle's Body Control Module (BCM) in a 2019-present Ram 1500 DT. This could lead to issues with vehicle functions controlled by the BCM.
2 SolutionsU-CodeNetwork
U
Error Code Type
Network
Components
1 affected
Electrical
Symptoms
6 common
- •Check engine light illuminated
- •Inconsistent power door lock operation
- •Malfunctioning interior lights
- +3 more
Most Affected Generations
1 generation
DT
2
Top Affected Components
1 component
Electrical
2
Severity Levels
1 level
medium
2
Quick Facts
2
Total Solutions
1
Affected Components
6
Common Symptoms
1
Generations
All Solutions
Showing 2 of 2 solutions for error code U0420 across all generations.