Tesla Model 3
P0400
The P0400 code on your Tesla Model 3 Highland (2024-present) indicates an issue with the exhaust gas recirculation (EGR) system, specifically a malfunction in the EGR flow.
1 SolutionP-CodePowertrain
P
Error Code Type
Powertrain
Components
1 affected
Exhaust System
Symptoms
5 common
- •Check engine light illuminated
- •Poor engine performance or rough idle
- •Decreased fuel efficiency
- +2 more
Most Affected Generations
1 generation
Highland
1
Top Affected Components
1 component
Exhaust System
1
Severity Levels
1 level
medium
1
Quick Facts
1
Total Solutions
1
Affected Components
5
Common Symptoms
1
Generations
All Solutions
Showing 1 of 1 solution for error code P0400 across all generations.