Toyota Highlander
U0401
The U0401 code in a 2020-Present Toyota Highlander XU70 indicates an invalid data received from the engine control module (ECM) or transmission control module (TCM), which can lead to issues with communication between various control modules.
2 SolutionsU-CodeNetwork
U
Error Code Type
Network
Components
2 affected
ElectricalTransmission
Symptoms
9 common
- •Check engine light illuminated
- •Transmission shifting issues (harsh or delayed shifting)
- •Inconsistent engine performance
- +6 more
Most Affected Generations
2 generations
XU70
1
XU50
1
Top Affected Components
2 components
Electrical
1
Transmission
1
Severity Levels
1 level
high
2
Quick Facts
2
Total Solutions
2
Affected Components
9
Common Symptoms
2
Generations
All Solutions
Showing 2 of 2 solutions for error code U0401 across all generations.
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