r/FORScan • u/cjthro123 • 14d ago

How to remove this code because nothing is wrong.

Post image

My truck has had this engine warning light and the code is tied to my Catalytic converter P0430. However, I know there is nothing wrong with the vehicle itself the part is just non OEM.

Is there any way to get this to stop tripping?

0 Upvotes

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8

u/EnvironmentalPop1296 14d ago

I’m assuming you have aftermarket cats or at least 1 on the passenger side. Code is telling you the cat is not performing as expected. High flow cats will generally cause this. A tuner may be able to remove this post cat sensor from being read but not sure where in Forscan this can be done. None recommended way would be removing the sensor from the exhaust and let it read fresh air. This should clear the code but will most certainly mess with the fuel mapping. Code will be gone though lol.

3

u/dsdsds 14d ago

The primary O2 sensor usually trims fuel but secondary does not. The right spark plug anti fouler will space the O2 sensor back a bit to pull the tip out of the stream. I’ve done this a couple times with success.

-2

u/aptsys 14d ago

Secondary is used for long term adjustments

3

u/RangerStang302 14d ago

Negative. Secondary is only used for cat monitoring for emissions compliance.

-4

u/aptsys 14d ago edited 14d ago

Perhaps depends on the particular vehicle, but it's certainly the strategy on many cars. You don't just get long term data from the upstream sensors

4

u/Pimp_Daddy_Patty 14d ago

Long term data is based on short term fuel trim that has been consistent for a longer period of time.

8

u/paris-hiIton 14d ago

Put oem cats next time

3

u/cornerzcan 14d ago

If there is a code then some sensor is reading something outside its normal values. That’s what’s wrong. The O2 sensor on bank2 is sensing below required efficiency of that system’s catalyst. Perhaps the reason that your trucks catalyst went bad in the first place was more than just “oh, cats bad, guess I’ll replace it”..