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Check Engine Light: Code P0420??


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I'M HAVING THE SAME PROBLEM. the samecode comes up for me when i went 2 autozone 2 get it checked out.i reset the code disconnecting batt. but comes back on? i had the dealer reprogram the cat. converter free of charge due 2 a letter they sent me bout the faulty cat. recall issue? PLEASE HELP ME. because right now i'm broke ass hell n unemployed.GREAT TIMING RIGHT. I LOVE MY LEGACY but its stressing me out!!!

 

I had this and it was a burned out O2 sensor. See if they will replace the sensor.

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  • 8 months later...

Sorry to bring up and old thread but just got this code last week on my 05 Legacy wagon 65k miles. Dealer just called and is replacing BOTH cats under PZEV warranty :eek::eek:

Aye Caramba!!

 

I intend to keep this car until the wheels fall off but if replacing the cats every 70k is required its not going to be fun!!

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