A P0420 diagnostic code on your 2019 Toyota RAV4 indicates that the catalytic converter efficiency has fallen below acceptable thresholds. The 2019 RAV4 was the first year of the current generation on Toyota's TNGA platform.
2019 RAV4 Engine Options
- 2.5L Dynamic Force: 203 hp (gas models)
- 2.5L Hybrid: Combined 219 hp
Both engines use 4-cylinder single-bank exhaust configurations.
Common Causes
- Converter Aging: Normal wear at 5+ years
- O2 Sensor Issues: Sensors may trigger false codes
- Exhaust Leaks: Air entering system
- Past Engine Issues: Damage from misfires
- Contamination: Oil or fuel contaminating converter