P0430 – Catalyst System Efficiency Below Threshold (Bank 2)
Description
The catalytic converter on Bank 2 is operating below efficiency.
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A diagnostic scanner with live data, freeze-frame information and the right system access can help you investigate the actual cause before replacing parts.
Compare Diagnostic ScannersSymptoms
- Poor acceleration
- Hesitation
- Rattling noise
- Check engine light
- High emissions
Causes
- Worn catalytic converter
- Exhaust leak
- Faulty O2 sensor
- Rich mixture
- Misfire issue
Diagnosis
- Inspect O2 sensors
- Check exhaust leaks
- Scan fuel trims
- Inspect converter
- Check misfires
Repair
- Replace catalytic converter
- Fix exhaust leaks
- Replace O2 sensors
- Address rich mixture
- Repair misfires
