Toyota Corolla
U0401
The diagnostic trouble code (DTC) U0401 indicates that there is an invalid data message received from the Engine Control Module (ECM) in your 2019 Toyota Corolla E210.
1 SolutionU-CodeNetwork
U
Error Code Type
Network
Components
1 affected
Electrical
Symptoms
5 common
- •Check engine light illuminated
- •Erratic behavior of the vehicle's systems
- •Reduced engine performance
- +2 more
Most Affected Generations
1 generation
E210
1
Top Affected Components
1 component
Electrical
1
Severity Levels
1 level
high
1
Quick Facts
1
Total Solutions
1
Affected Components
5
Common Symptoms
1
Generations
All Solutions
Showing 1 of 1 solution for error code U0401 across all generations.