Engine Error
P0430
Catalyst System Efficiency Below Threshold (Bank 2)
Severity
Medium
Symptoms
Check engine light, reduced fuel economy
Common Causes
- Failing catalytic converter Bank 2
- Leaking exhaust
- Oxygen sensor failure
- Coolant leak into exhaust
How to Fix
- 1 Inspect exhaust system
- 2 Test oxygen sensors
- 3 Replace Bank 2 catalytic converter
- 4 Inspect for internal engine leaks
Estimated Repair Cost
USD
$400
–
$2500
Converter and labor: $500 - $2,500