P0421

The vehicle, a Ram 1500 DT (2019-Present), is displaying a P0421 error code, indicating a malfunction related to the warm-up catalyst efficiency on Bank 1.

The P0421 code indicates that the engine control module (ECM) has detected an issue with the warm-up catalyst efficiency for bank 1 in a 2019-present Ram 1500 DT. This suggests a potential malfunction in the catalytic converter or related components.

The P0421 code indicates that the engine control module (ECM) has detected an issue with the warm-up catalytic converter efficiency for Bank 1 in a 2019-present Ram 1500 DT. This typically suggests that the catalytic converter is not performing to specifications, which can lead to increased emissions and reduced engine performance.

The vehicle, a Ram 1500 DT (2019-Present), is displaying a P0421 error code, indicating a malfunction related to the warm-up catalyst efficiency on Bank 1.

The P0421 code indicates that the engine control module (ECM) has detected an issue with the warm-up catalytic converter efficiency for Bank 1 in a 2019-present Ram 1500 DT. This typically suggests that the catalytic converter is not performing to specifications, which can lead to increased emissions and reduced engine performance.

The P0421 code indicates that the engine control module (ECM) has detected an issue with the warm-up catalyst efficiency for bank 1 in a 2019-present Ram 1500 DT. This suggests a potential malfunction in the catalytic converter or related components.