A P0420 diagnostic code on your 2022 Toyota Camry indicates that the catalytic converter efficiency has fallen below acceptable levels. The ECM monitors converter performance and triggers this code when downstream oxygen sensor readings suggest reduced catalytic activity.
2022 Camry Engine Options
- 2.5L Dynamic Force 4-cyl: 203 hp, single exhaust bank
- 2.5L Hybrid: Combined 208 hp, single exhaust bank
- 3.5L V6: 301 hp, dual exhaust banks
For V6 models, P0420 specifically affects Bank 1.
Common Causes
- Converter Degradation: Wear or contamination
- O2 Sensor Issues: Faulty sensors triggering false codes
- Exhaust Leaks: Air entering system affecting readings
- Engine Problems: Misfires or fuel issues damaging converter
- Oil Contamination: Internal leaks fouling converter