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Re: SES Codes P0420 and P1404
We'll, good news. I don't if I told you this but it was a p0440, evap sys. I had already replaced the gas cap and nothing. Then I had given up on it. Later on I came across your thread, and it got me thinking again. Went to this shop in mesa az, turn out its not the same shop so, no dyno tunes. I read online the p0440 has to do with the purge solenoid and EUREKA!!!!! It turned to be that. Now that I think about it, I did smell gas every time I turned the car off but it never dawned on me , I took as the car being old and too many miles. Anyway, thanks for you input on this and I'm stoked that my car no longer has a ses light anymore..... hope I don't jinx myself by saying this.
Ok, if anymore problems arise on your car that stomp you, hopefully I can help as you did with mine. Good luck.
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