This is your first sign that there is a problem somewhere in the emission system.
#Ford engine codes for ob2 06 code
When this code is stored by the ECU, the malfunction indicator lamp will come on. This P0420 obd2 code indicates that there is a problem with the catalytic converter, oxygen sensors or both. It is worth taking the time to check them out thoroughly before you replace the catalytic converter.
#Ford engine codes for ob2 06 how to
To perform the oxygen sensor test, refer to the article “ How to test a bad o2 sensor” for instructions. For that reason, it is important to perform an oxygen sensor test before replacing or cleaning the catalytic converter. The catalytic converter depends on the oxygen sensors to operate efficiently. What are the Causes and Symptoms of OBD-II code P0420? You probably won’t notice that there is a problem with the catalytic converter but the environment will definitely be impacted. Thus, it will also signal the ECU to store the P0420 code and turn on the check engine light. This will result in higher than normal oxygen levels.
One is located in front (upstream) while the other is located after (downstream) of the catalytic converter.ĭuring normal operation, if those two O2 sensors indicate the same readings, the catalytic converter will not be operating within specifications. While operating, the converter utilizes two O2 sensors. The rare metals make it efficient but also susceptible to damage if the engine or other issues are not addressed. The rare metals used, reduce the toxicity of the exhaust gasses. This is why the catalytic converter is so expensive to replace. It is made of platinum, palladium and possibly rhodium which are all rare metals. Taking a closer look at the catalytic converter, it looks a lot like the muffler in shape and size.
When the ECU stores this code, it means that the catalytic converter is not operating at maximum efficiency and may need replacement. The definition of the OBD-II P0420 code is “ Catalyst System Efficiency Below Threshold (Bank 1)”. What does it mean by sending Error Code P0420 So, Let’s dive in the details for what does the code P0420 mean, what are the causes and how to fix them. Using a car diagnostic software or obd2 scanner you may find this Obd2 code from ECU. If the efficiency is lower than it should be, the ECU will store OBD-II code P0420. The o2 sensors in the emission system measure the catalytic converter efficiency. It is designed to optimize performance and keep the exhaust system emissions within acceptable limits. The Engine Control Unit (ECU) in your car is responsible for monitoring the emission system sensors.
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