Honda Accord
U0121
The Honda Accord (10th Generation, 2018-2022) is displaying a U0121 code, indicating a communication issue between the control modules in the vehicle.
2 SolutionsU-CodeNetwork
U
Error Code Type
Network
Components
1 affected
Electrical
Symptoms
9 common
- •Check engine light illuminated
- •Erratic or inoperative dashboard gauges
- •Loss of functionality in electronic features (e.g., radio, navigation)
- +6 more
Most Affected Generations
1 generation
CP/CS
2
Top Affected Components
1 component
Electrical
2
Severity Levels
1 level
high
2
Quick Facts
2
Total Solutions
1
Affected Components
9
Common Symptoms
1
Generations
All Solutions
Showing 2 of 2 solutions for error code U0121 across all generations.