p0420 code again

I had this issue as well recently but it went away after a week of being on. It was the o2 sensor code after the cats.
 
Being it's on the 01 and those have 2 cats with 4 sensors wide band. Those will detect a high airflow burned out cat error.

My 02 Camry had that error and it was the front cat burn through.

So being it disables the VSC and Trac with the CEL on. What happens when you put a spacer with 2 gaskets on the 2nd O2 sensor after the first cat?

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Being it's on the 01 and those have 2 cats with 4 sensors wide band. Those will detect a high airflow burned out cat error.

My 02 Camry had that error and it was the front cat burn through.

So being it disables the VSC and Trac with the CEL on. What happens when you put a spacer with 2 gaskets on the 2nd O2 sensor after the first cat?

Sent from my SM-J337V using Tapatalk
01 and 02 have 4 oxygen sensors? I thought they only had 2 of them total similar to the Cali emissions 4Runners from earlier years.
 
01 and 02 have 4 oxygen sensors? I thought they only had 2 of them total similar to the Cali emissions 4Runners from earlier years.

I will verify but I thought they had more then 2 as the federal emissions of 96-00. I will report back when i look under my 01 sport
 
Correction thanks to bad luck. I thought they had more than 2 02 sensors but the 3rd gen has 2. I work on too many different Toyota vehicles in my fleet..:/



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for some magic reason, today it was not on....dont get it...yet i found another way to get the cel light out of my face.........the 2001 is for sale.....I will be honest, if the light is off, I will tell someone that it will pop on and what it "could" indicate
but shcuks I drove it for 6 months with it on....in the winter/snow
 

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