P0430
Medium severityCatalyst System Efficiency Below Threshold (Bank 2)
Quick answer
P0430 (Catalyst System Efficiency Below Threshold (Bank 2)) means: The catalytic converter on bank 2 isn't cleaning the exhaust as well as expected. Plan a workshop visit soon. Typical Malaysia repair cost: RM300–RM1,200 (approximate).
Symptoms
- •Check engine light
- •Possible mild power or economy change
Likely causes
- •Aging catalytic converter
- •Faulty downstream oxygen sensor
- •Exhaust leak
Can I drive?
Plan a workshop visit soon.
Estimated repair cost (Malaysia)
RM300–RM1,200 (approximate)
This is general information, not a diagnosis. AutoMalaya OBD helps explain your car’s actual scan data; a qualified mechanic may still need to inspect the vehicle.