P 0455 Solution FYI - Saab 9-5 Bulletin Board - Saabnet.com
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P 0455 Solution FYI
2 Saabers Like This Post!
Posted by Itsasaab [Email] (more from Itsasaab) on Thu, 1 Sep 2022 16:14:26
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FYI re 0455 code solution in a 2005 9-5 wagon.
Seeing this board has been so great for me over the years I hope someone will benefit from this.
Could not find the vacuum leak for the 0455 code, said to be a "Large vacuum leak".
Tried all the usual players like the gas cap, the Evap purge valve, brake line etc EXCEPT, the fuel pump cap under the back seat.
Yes, it was me that changed the fuel a pump couple of years back and therefore me that likely caused it. Anyway a smoke test showed it as the spot to attend to and sure enough she is going like a train again after resealing it.
I just wish I had thought of it earlier. My focus had been the front of the car and never thought of that at all.
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