Good day everyone, I finally trade m S70 t5 after 10 years of driving it, it just failed smog because check engine light was on, I took it to 3 different dealers for code 455, they couldn't fix it, so I trade it for a new car.

P0455 was on, I replaced purge valve, reset the check engine light, I have driven the car for many miles over a month and it still hasn't complete the drive cycle. I connected the scanner and the ECM is still reseting. What could cause this? I have reset the light before and the drive cycle is ...

thanks Jack but still having problem with code 455, a pain.

I'm talking about evap canister shut off valve.

Do anybody know where the EVAP system or evap shutoff valve RELAY is located?

Thanks so much, I will try.

That seems your cowl water drain hose, in my car the EVAP canister is at underneath the car RR wheel next to fuel filter others model behind front left fender.

Car runs great, it has a problem with EVAP system ,after many test suspected ECU may be the problem,swap engine ECU with one of the same car model year and part number, car still runs great but it does not complete drive cycle yet after of about a month of driving the car, what could be the problem?

I also have the same problem with my 98's70, PO455 EVAP gross leak, took it to the steeler, they did the smoke test they did not found a leak , cleared the code , it comes back in a few days the same code. they also did the evap test with the laptop and it pass but for some reason the check engine ...

Question , do anybody know how much voltage should have at evap canister shut off valve harness connector across the lead? thanks.