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P0440 And Pending P0446 For 2000 Rx 300


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Hey everyone new to posting here although I have come here alot for help on working in my car so I know it's great here. I have had a trouble code p0440 recently and then I received a pending code of 0446 a week after that. My vehicle has an inspection coming up soon and I wanted to know if anyone could identify or pinpoint the exact problem. Some people are telling me the vsv needs replacement and I've already changed the gad cap twice. Any ideas?

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