What does the P0420 code on a Chevy Malibu mean?
The P0420 code in a Chevy Malibu will often be thrown one of your oxygen sensors are not functioning properly. Typically, the code will be triggered by the upstream oxygen sensor (before the converter). There aren’t usually any drivability issues associated with P0420.
What does the OBDII code mean on a Chevy Malibu?
This page is meant to help you troubleshoot the Chevy Malibu P0420 trouble code. It covers Chevy Malibu P0420 meaning, symptoms, causes, and possible solutions. In the Malibu, OBDII P0420 is often caused by a bad oxygen sensor, but there can be other causes as well. One of the most common trouble codes with all Chevy vehicles is the P0420.
How to diagnose the P0420 OBD2 trouble code?
How to Diagnose the P0420 Code 1 Connect an OBD2 Scanner and look for related trouble codes. 2 Check the live data to see the front and read O2 sensor signals. 3 Heat the engine and check the temperature at the front of the catalytic converter and then in the rear.
What does P0420 mean on a catalytic converter?
P0420 means that the efficiency of the catalytic converter is below the threshold. The ECM uses two O2 sensors, one in the front and one in the back of the catalytic converter to measure the efficiency. If the efficiency is low, the P0420 code will be triggered.
The P0420 code in a Chevy Malibu will often be thrown one of your oxygen sensors are not functioning properly. Typically, the code will be triggered by the upstream oxygen sensor (before the converter). There aren’t usually any drivability issues associated with P0420.
This page is meant to help you troubleshoot the Chevy Malibu P0420 trouble code. It covers Chevy Malibu P0420 meaning, symptoms, causes, and possible solutions. In the Malibu, OBDII P0420 is often caused by a bad oxygen sensor, but there can be other causes as well. One of the most common trouble codes with all Chevy vehicles is the P0420.
How can I fix the P0420 code on my catalytic converter?
To fix the P0420 code, you need to diagnose what is causing the trouble code. Start with inspecting and diagnosing your catalytic converter and continue with checking the O2 sensors. What can cause a P0420 code? A bad catalytic converter is the most common cause of the p0420 code.