Check Engine Light Went Off By Itself Catalytic Converter

So my car had a check engine light on for a year now. A failed test for catalytic converter efficiency will result in a code p0420 or p0430. In this video i how you haw to fool your computer into thinking you still have cats once they have been removed did this work for you.

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In this situation the check engine light will not come on to indicate catalytic converter failure because all is well.

Check engine light went off by itself catalytic converter.

It is possible for many faults to result in a check engine light that comes on intermittently. A check engine light will shut itself off if the condition that caused it is remedied. Comment and let me kno. An illuminated check engine light or malfunction indicator lamp cel or mil with a catalytic converter diagnostic trouble code dtc is the most common catalytic converter problem indicator.

Switching the ignition on and off. To clear the confusion we need a basic understanding of what the check engine light is trying to tell us. A check engine indicator is a malfunction indicator light or mil for the computer management system. The powertrain control module pcm will continue to run tests even after a failure has been detected.

There were several things wrong with it. If the light goes off we assume things are okay. Finally i had some money saved up and had my uncle read the codes at his shop goodyear. Knowing if we should continue driving or stop right now is difficult.

While your car is motionless turn the ignition on and off with a second lag time. When a converter is bad or failing the rear oxygen sensor shows a lot of oxygen coming out of the converter and therefore the light comes on to show that the converter is not healthy. Repeat the process three or four times and then drive a short distance to see whether the engine light goes off. If the test passes enough times the light will turn off.

I needed an 02 sensor which we replaced spark plug wires and just for the heck of it we replaced the fuel filter and fuel pump because it seemed to be having some issues with fuel in our own backyard with the. Now it comes on again. I think what s happening is that your oxygen sensor or the catalytic converter itself is on the verge of failing. The scan tool is an easy way to get a response to queries about whether the check engine light will reset itself.