* Increased fuel consumption: A faulty catalytic converter can also cause the engine to run lean, which can lead to increased fuel consumption.
* Check engine light: A faulty catalytic converter can trigger the check engine light to come on.
* Rotten egg smell: A faulty catalytic converter can produce a rotten egg smell due to the release of hydrogen sulfide gas.
* Rattling or scraping sound: A faulty catalytic converter can make a rattling or scraping sound due to the breakdown of the internal ceramic honeycomb structure.
* Vibrations: A faulty catalytic converter can cause the exhaust system to vibrate due to the restriction of exhaust gas flow.
* Premature failure of oxygen sensors: A faulty catalytic converter can cause the oxygen sensors to fail prematurely due to the increased levels of oxygen in the exhaust gas.
