OBD-II Code: P0430

MEDIUM SEVERITY Emissions

Catalyst System Efficiency Below Threshold (Bank 2)

Can I Drive?

Usually short-distance only; diagnose soon
Stop driving if you notice overheating, bad misfires, loss of power, fuel smell, or flashing warning lights.

Common Causes

Failing catalytic converter (Bank 2), faulty O2 sensors

DIY Checks

Check exhaust for leaks; inspect O2 sensors

Mechanic Questions to Ask

Catalytic converter replacement

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Disclaimer: OBD code information is educational, not a professional diagnosis. The same code can have different causes depending on vehicle, mileage, maintenance history, and related codes. Always verify with a qualified mechanic.