The contact owns a 2016 Dodge Journey. The contact stated that while driving at various speeds, or while the vehicle was idling while depressing the accelerator pedal, the vehicle made a chugging and choking sound. The vehicle hesitated before accelerating as needed. The contact stated that the failure was intermittent at first but had become a constant failure. The check engine warning light was illuminated. The contact stated that an inspection was completed, and the vehicle failed the Emissions test due to DTC: P40; for the catalytic converter and Oxygen sensor. The vehicle was not taken to the dealer to be diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was 97,000.