Honda Pilot
U0121
The U0121 code on your 2016-2022 Honda Pilot YF3 indicates a communication issue between the powertrain control module (PCM) and the transmission control module (TCM). This can lead to performance problems and impaired vehicle operation.
2 SolutionsU-CodeNetwork
U
Error Code Type
Network
Components
2 affected
ElectricalBrakes
Symptoms
10 common
- •Check engine light illuminated
- •Transmission not shifting properly
- •Loss of power or acceleration issues
- +7 more
Most Affected Generations
2 generations
YF4
1
3G
1
Top Affected Components
2 components
Electrical
1
Brakes
1
Severity Levels
1 level
high
2
Quick Facts
2
Total Solutions
2
Affected Components
10
Common Symptoms
2
Generations
All Solutions
Showing 2 of 2 solutions for error code U0121 across all generations.