Dodge Charger check engine light due to evap system leak and performance issues with codes P0456, P2135, and P0121 on Dodge Charger

Some Dodge Charger owners report experiencing issues related to the check engine light being illuminated due to trouble codes P0456, P2135, and P0121. The P0456 code typically indicates a small EVAP system leak, which may result in a faint fuel smell while driving, although it is unlikely to affect engine performance directly. In contrast, the P2135 code is associated with throttle/pedal position sensor voltage correlation problems, leading to a lack of power or responsiveness. Additionally, the P0121 code signifies issues with the throttle position sensor, which can cause engine performance problems such as hesitation or stalling. It is crucial for owners to address these codes promptly to prevent further performance issues and complications, including failed emissions tests. Seeking professional diagnosis and repair is recommended to ensure the vehicle operates optimally.