Engine Error
P0432
Main Catalyst Efficiency Below Threshold Bank 2
Severity
Medium
Symptoms
Failed emissions, check engine light, slight loss of power
Common Causes
- Bad Bank 2 catalytic converter
- Exhaust leak on Bank 2
- Contaminated catalyst from coolant/oil
- Faulty O2 sensors on Bank 2
How to Fix
- 1 Replace Bank 2 catalytic converter
- 2 Weld or patch exhaust leaks
- 3 Repair head gasket/valve seals if leaking fluids
- 4 Test and replace O2 sensors
Estimated Repair Cost
USD
$400
–
$2000
Catalytic converter replacement: $500 - $2,000