Toyota RAV4
U0121
The U0121 code indicates a communication issue between the Engine Control Module (ECM) and the Vehicle Stability Control (VSC) system in a Toyota RAV4 Fourth Generation (2013-2018).
3 SolutionsU-CodeNetwork
U
Error Code Type
Network
Components
1 affected
Electrical
Symptoms
10 common
- •Check engine light illuminated
- •Vehicle stability control warning light on
- •ABS warning light illuminated
- +7 more
Most Affected Generations
2 generations
XA50
2
XA40
1
Top Affected Components
1 component
Electrical
3
Severity Levels
1 level
high
3
Quick Facts
3
Total Solutions
1
Affected Components
10
Common Symptoms
2
Generations
All Solutions
Showing 3 of 3 solutions for error code U0121 across all generations.