P0420 - Federal Emissions Warranty

Hello all,
Truck is throwing this code once in a while. If this is the catalytic converter, would it be covered under the 8yr/80,000mi Federal Emissions Warranty?

 

What year and mileage?

 

One of your O2 sensors went bad. Usually lasts over 100k. Change all of them at the same time.
Edit: my 03 Tundra gave that code for the sensor. It was the driver side upstream. Dont know why the taco would be different but….

 

could be the cat or the O2 sensor or too much shoot/ grime from the engine.... I had a Subaru throw that same code and it wan't the o2 sensor or cat but the engine that was too dirty- sending out contaments that the o2 sensor was reading

 

PO420 is usually a bad cat.

 

Should be covered under the 8/80.

 

*sigh*
Bank one is the give away:
https://www.tacomaworld.com/threads/p0420-bank-1-front-or-rear-cat.375033/

 

Yes it would be covered if it is indeed bad and the vehicle is under 8 yrs/80k miles

 

Note: About 1000 miles ago I had the direct injectors replaced on bank 1.
Could this be a result from all of the fuel being dumped?

 

Converters don't like raw fuel. If one of the old injectors was leaking I could see it causing a problem

 

for sure can.