Contents hide 1 2021 Polestar 1 Emission control system 2 Emission controls 2.1 Three-way catalytic converter 2.2 Heated oxygen sensors 2021 Polestar 1 Emission control system Emission controls The vehicle has various components for emission control. Three-way catalytic converter Keep your engine properly tuned. Certain engine malfunctions, particularly involving the electrical, fuel or distributor ignition … Continue reading 2021 Polestar 1 Emission Control System Owners Manual