Ford Mustang
U0420
The U0420 code indicates an invalid data received from the vehicle's Body Control Module (BCM) in a 2015-2023 Ford Mustang S550, which may lead to various electrical and functionality issues.
2 SolutionsU-CodeNetwork
U
Error Code Type
Network
Components
1 affected
Electrical
Symptoms
9 common
- •Check engine light illuminated
- •Malfunctioning electrical accessories (e.g., windows, locks)
- •Inconsistent vehicle behaviors (e.g., improper climate control operation)
- +6 more
Most Affected Generations
1 generation
S550
2
Top Affected Components
1 component
Electrical
2
Severity Levels
2 levels
high
1
medium
1
Quick Facts
2
Total Solutions
1
Affected Components
9
Common Symptoms
1
Generations
All Solutions
Showing 2 of 2 solutions for error code U0420 across all generations.