Tesla Model 3
P0621
The P0621 code indicates an issue with the generator lamp circuit in a 2024-present Tesla Model 3 Highland, which may result in the generator not functioning properly or the warning lamp illuminating on the dashboard.
1 SolutionP-CodePowertrain
P
Error Code Type
Powertrain
Components
1 affected
Electrical
Symptoms
5 common
- •Generator warning light illuminated on the dashboard
- •Reduced battery charging efficiency
- •Electrical system malfunctions
- +2 more
Most Affected Generations
1 generation
Highland
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 P0621 across all generations.