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25/03/2025 10:03 am
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2005 Toyota Sienna-193,000 miles trips catalytic converter code. Should I just run some ATS Fuel treatment and reset the code?
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25/03/2025 10:22 am
Should I just run some ATS Fuel treatment and reset the code?
No, you should do a proper diagnosis of the problem. For example, is there freeze-frame data that was stored when the code triggered? It would help if you would let us know the actual code. P0420? Something else? (Codes don't necessarily pertain to a fault in a specific part, they tell you a condition exists that usually has several potential causes.)
