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Re: diagnostic trouble code P1453- cannot find any posts on the 9-3 Posted by Bernie [Email] (#1501) [Profile/Gallery] (more from Bernie) on Fri, 25 Jun 2021 15:19:10 In Reply to: diagnostic trouble code P1453- cannot find any posts on the 9-3, John W, Fri, 25 Jun 2021 13:20:37 Members do not see ads below this line. - Help Keep This Site Online - Signup |
Hello,
When I check WIS it shows it as being a code for tank pressure sensor value to high. It shows some diagnostics which are basically Tech 2 based. But a few voltage checks with the sensor unplugged. You should be able to do those tests at the 10 pin connector for the fuel pump. (located just infront of the tank on the passenger side strap. It appears that pin 3 at connector goes to pin C at sensor. Pin 4 goes to pin A at sensor and pin 5 goes to pin B at sensor. It appears that on pin 3 harness side you should have 5.0v from ecm and pin 4 harness side should be ground from ecm. If those readings are correct the Tech 2 would be needed to read the harness unplugged and read pin b jumped to pin c which should be pin 3 and 5 jumped. Open should read 1250PA and jumped should read -3750PA. Hope this helps. If you have any questions just ask. Good Luck, Bernie
PS. the pin locations 1 to 10 on the plug are marked on the connector and the letters I assume are marked but you won't see them unless you drop the tank.
_______________________________________ George Riggin Specialty Automotive Current Saabs 1993 900 Turbo Conv. 1993 900 Turbo Conv. Auto 2003 9-3 Conv 2004 9-5 Arc Sedan 2005 9-3 SS 4 door 2005 9-3 SS Conv 2007 9-5 Aero Sedan 1986 900 Turbo Conv A few parts cars also
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