Volkswagen Passat
U0401
The U0401 error code indicates an invalid data received from the engine control unit (ECU) in a Volkswagen Passat B8 (2015-2022). This can lead to various issues in communication between vehicle control systems.
2 SolutionsU-CodeNetwork
U
Error Code Type
Network
Components
1 affected
Electrical
Symptoms
10 common
- •Check engine light illuminated
- •Erratic behavior of vehicle control systems
- •Poor fuel economy
- +7 more
Most Affected Generations
1 generation
B9
2
Top Affected Components
1 component
Electrical
2
Severity Levels
1 level
high
2
Quick Facts
2
Total Solutions
1
Affected Components
10
Common Symptoms
1
Generations
All Solutions
Showing 2 of 2 solutions for error code U0401 across all generations.
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