Mitsubishi P0430 Error Code: How to Fix It

Q: Can I drive my Mitsubishi with code P0430?

You can drive short distances, but prolonged driving with P0430 can damage other components and reduce fuel economy. The vehicle may not pass emissions testing and could experience reduced performance.

Q: How much does it cost to fix P0430 on a Mitsubishi?

Costs vary depending on the root cause. Oxygen sensor replacement typically costs $150-300, while catalytic converter replacement can range from $800-2000 depending on your specific Mitsubishi model and labor rates.

Q: What causes catalytic converter failure in Mitsubishi vehicles?

Common causes include faulty oxygen sensors, engine misfires, oil or coolant leaks into the exhaust, using incorrect fuel or oil types, and normal wear over high mileage (typically 80,000-120,000 miles).

Q: Will P0430 cause my Mitsubishi to fail emissions testing?

Yes, P0430 will likely cause your vehicle to fail emissions testing in most states. The code indicates the catalytic converter is not meeting efficiency standards required for emissions compliance.

Abstract

The P0430 error code indicates your Mitsubishi's catalytic converter on Bank 2 (the side opposite cylinder 1) is not efficiently converting harmful emissions. This means the catalyst system's efficiency has dropped below the acceptable threshold, which can affect performance and emissions compliance.