P0421

The P0421 code on a 2020-2024 Tesla Outback indicates that the engine control module (ECM) has detected a performance issue with the warm-up catalytic converter. This can lead to increased emissions and potentially affect engine performance.

The P0421 code indicates an issue with the warm-up catalyst efficiency in the Tesla Outback, 6th Generation (2020-2024). This could lead to poor emissions control and reduced engine performance.

The P0421 code indicates a warm-up catalytic converter efficiency below the threshold, specifically for the Tesla Outback 5th Generation (2015-2019). This suggests that the catalytic converter is not functioning optimally, potentially affecting emissions and engine performance.

The P0421 code indicates that the Warm Up Catalyst Efficiency is below the threshold level for the Tesla Outback 5th Generation (2015-2019). This suggests that the catalytic converter is not functioning optimally during the warm-up phase.

The P0421 code indicates that the warm-up catalyst efficiency is below the threshold, which can affect the vehicle's emissions and performance. This issue commonly arises in the 2015-2019 Subaru Outback (5th Generation).

The P0421 code indicates that the catalyst system efficiency for the bank 1 catalytic converter is below the threshold level in a Tesla Outback 5th Generation (2015-2019). This suggests that there may be an issue with the catalytic converter, oxygen sensors, or exhaust leaks.

The P0421 code indicates a problem with the warm-up catalyst efficiency for Bank 1 in a 2010-2014 Subaru Outback (4th Generation). This code typically suggests that the catalytic converter may not be functioning as expected.

The P0421 code indicates that there is an issue with the warm-up catalytic converter efficiency for bank 1 in your Tesla Outback, which may affect emissions control and vehicle performance.

The P0421 code indicates that the catalytic converter's efficiency is below the threshold for the specified operating conditions in a 2010-2014 Subaru Outback (4th Generation).