Dodge Ram 2500 Van repeated issues with catalytic converters, engine light on with multiple fault codes including P0420 and P0300 on Dodge Ram 2500 Van

Some Dodge Ram 2500 Van owners report experiencing repeated issues with catalytic converters, often indicated by the engine light illuminating alongside fault codes such as P0420 and P0300. These problems can stem from various causes, including emissions faults and sensor failures, which trigger the Check Engine Light. Symptoms of a clogged catalytic converter may include limited performance at higher speeds, unusual exhaust odors, poor fuel economy, and even rattling noises. A malfunctioning catalytic converter can significantly reduce engine performance and affect emissions output. To accurately diagnose these issues, owners are advised to examine live engine data, as exhaust leaks can also trigger similar fault codes. Symptoms such as slow engine performance, a sulfur-like smell from the exhaust, dark exhaust smoke, and excessive heat under the vehicle indicate a need for prompt repair. Addressing these catalytic converter issues is crucial for maintaining optimal vehicle performance and emissions control.