P0430 means catalyst system efficiency below threshold (bank 2). Same as P0420, but for bank 2 (the other side of a V6/V8). Your second catalytic converter's efficiency has dropped belo
You can keep driving — get it checked when convenient.
Same as P0420, but for bank 2 (the other side of a V6/V8). Your second catalytic converter's efficiency has dropped below the threshold.
Age-related degradation.
Rule out the sensor first — it's the cheap fix.
Skews sensor readings.
Poisons the catalyst.
Overheats the converter.
Typically $200–$2500
O2 sensor typically $200–$400; converter typically $1,000–$2,500. Estimates vary by vehicle. Costs are estimates and vary by vehicle, location, and shop.
Safe to drive. Fix before your next emissions test, and rule out the O2 sensor before paying for a converter.
Typically $200–$2500. O2 sensor typically $200–$400; converter typically $1,000–$2,500. Estimates vary by vehicle.
You can keep driving — get it checked when convenient.
The most common cause is worn catalytic converter (bank 2). Age-related degradation.