Ford Explorer
U0421
The U0421 code in a 2020-present Ford Explorer indicates an invalid data received from the vehicle's body control module (BCM), which can lead to various electrical issues within the vehicle.
2 SolutionsU-CodeNetwork
U
Error Code Type
Network
Components
1 affected
Electrical
Symptoms
9 common
- •Check engine light illuminated
- •Malfunctioning dashboard indicators
- •Inoperative keyless entry system
- +6 more
Most Affected Generations
1 generation
U625
2
Top Affected Components
1 component
Electrical
2
Severity Levels
1 level
medium
2
Quick Facts
2
Total Solutions
1
Affected Components
9
Common Symptoms
1
Generations
All Solutions
Showing 2 of 2 solutions for error code U0421 across all generations.