What is Code P0430 2004 Cadillac CTS?

Answer 1

Code P0430 for a 2004 Cadillac CTS indicates that the engine control module (ECM) has detected a problem with the catalytic converter's efficiency for bank 2. This often suggests that the catalytic converter may be failing, or there could be issues with the oxygen sensors or exhaust leaks affecting the readings. It's advisable to have the vehicle inspected to confirm the exact cause and address any necessary repairs to maintain optimal engine performance and reduce emissions.