How many catalytic converters does the 2008 Nissan Sentra have?

The 2008 Nissan Sentra has one catalytic converter for its single exhauSTSystem. The catalytic converter helps to reduce airborne pollutants that could harm people as well as the environment, turninG90% of harmful emissions into less harmful gasses. A well-maintained catalytic converter improves the efficiency of Your car, directly affecting its overall health and performance.Catalytic converters can overheat because of excessive amounts of unburned gas caused by a mIS Firing spark plug or a leaky exhaust valve. Also, a failed oxygen sensor can cause overheating. On many vehicles, the cat is located under the vehicle, and like other parts of the exhauSTSystem, it can also be damaged by road debris or by running over a curb.