Part and system guide
Catalytic Converter
The catalytic converter reduces harmful exhaust emissions using a coated internal catalyst.
What it does
Converts hydrocarbons, carbon monoxide, and nitrogen oxides into less harmful gases.
Failure signs
- P0420 code
- Rotten egg smell
- Rattle from exhaust
- Loss of power if restricted
- Failed emissions test
Maintenance notes
- Repair misfires quickly to avoid converter damage.
- Check for exhaust leaks before replacement.
- Use legal replacement parts that match local emissions requirements.