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Po Code 446 And A/c Codes 31 &41


katford

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The A/C of my 1999 RX300 quit recently and a couple of hours later, the check engine light came on with a PO446 code. I'm trying to determine if these events are related and how to resolve each. If I turn the A/C on, the compressor comes on for about three seconds , then the A/c light blinks and the compressor turns off. But for the three seconds the compressor is on, the air is definately cold.

Incidently, the day before the A/C quit and the check engine light came on we had the oil changed at Walmart. After reading another post, I went back to the mechanic and asked him to make sure the evaporator purge line was securely connected. He said that line and all related lines seemed securely attached.

Any ideas? We're melting here in Tampa!

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