Can a P0420 catalytic converter get so hot?
The converter will in fact get so hot that to the point that it will actually melt the brick inside into a ball. When it cools back down, it can tend to cause a low power issue and will eventually flag a P0420 code.
What to do if you have a P0420 code in your computer?
If you have a P0420 code in the computer along with an oxygen sensor code, be sure to diagnose and fix the oxygen sensor code first before going after the p0420 code. Below are pictures of real plugged converters. The first one is restricted beyond belief. Air could simply NOT flow through the engine.
What does P0420 mean on a check engine light?
Welcome to P0420.com, the place dedicated to that DTC (diagnostic trouble code) P0420. The P0420 code is a very popular one and that’s why there’s a site dedicated to that specific trouble code. If your car’s check engine light is on, get that code read in case it’s a P0420. A P0420 code is a trouble code on OBD-II equipped vehicles.
Why do I need to resolve the P0300 code first?
For example, if you have these codes – P0300, P0420, P0171, then you’re going to want to tackle the P0300 Random Misfire code first (resolve it), and then tackle the P0420 code, etc. The reason for that is that the first code could be causing further DTCs to be set.
What does a P0420 code on a catalytic converter mean?
This code indicates that your car’s computer has detected underperformance from the Bank 1 catalytic converter. What Does the P0420 Code Mean? A P0420 code indicates an issue with the catalytic converter. A catalytic converter has an oxygen sensor in the front (upstream) and another on its rear (downstream).
What does the misfire code P0300 mean?
Codes like P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, and P0308 are misfire codes, and these codes require misfire diagnosis. If the catalytic converter is replaced without repairing the misfire, the new catalytic converter will go bad again.
Where is the O2 sensor after the cat converter?
If the catalytic converter is doing its job properly, the downstream O2 sensor, located AFTER the cat converter, should rarely switch between rich and lean. If it does toggle between rich and lean, the sweep should be fairly mild.
How long does it take for DTC P0420 to set?
After you change out a cat, DTC P0420 can set during the new cat’s “burn in”. It will take up to 100 miles for the new cat to gas out and operate at full capacity. Great, we are having the same issue, it just flagged that code P0420 the other day.