What does code P0420 Bank 2 mean?

What does code P0420 Bank 2 mean?

the catalytic converter
A P0420 code indicates a problem with the catalytic converter. The purpose of the catalytic converter is to break down harmful pollutants created during the combustion cycle. If the downstream oxygen sensor is working properly, and there isn’t an issue with the catalytic converter, its readings should remain steady.

Which sensor is P0420?

When check engine lights are scanned, a p0420 code is a very common result. It’s actually a generic code, meaning it can be thrown from any vehicle after 1996. Commonly, people think the p0420 code indicates that the oxygen sensors need to be replaced, but that’s definitely not always the case.

Can I drive with P0420 code?

While P0420 does not pose a danger to the driver, it can cause driveability concerns such as a lack of power or poor acceleration if left unrepaired. It can also cause severe damage to other components of your vehicle if not addressed in a timely manner.

What causes the P0420 trouble code on a Sentra?

There are many things that can cause the P0420 trouble code in your Sentra. Here are the most common ones. Oxygen Sensor – The P0420 codes is thrown when the oxygen sensors on both sides of the exhaust have very similar readings. When the oxygen sensor is bad, it can cause a false reading and trigger the code.

What is the P0420 Nissan code catalyst system efficiency?

Fault Code P0420 Catalyst System Efficiency Below Threshold Bank 1. (Three way catalytic converter Bank 1 does not operate properly). Three way catalyst converter Bank 1 does not have enough oxygen storage capacity. Nissan Technicians tell me that this is a very common problem with Nissan vehicles.

What does the OBD II fault code P0420 mean?

What Does Code P0420 Mean? OBD II fault code P0420 is a generic code that is defined as ““Catalytic Converter System Bank 1, Efficiency below Threshold”, and is set when the PCM (Powertrain Control Module) detects that the catalytic converter on Bank 1 is operating below a minimum allowable efficiency threshold.

What does the OBDII code for Nissan Sentra mean?

Nissan Sentra P0420 OBDII Code Defined. P0420 is a OBDII trouble code. The code technically stands for: Catalyst System Efficiency Below Threshold. Your Sentra has at least two oxygen sensors, one before and after the catalytic converter.