Re: codes p1312 and 0748 + details...ideas? - Saab 9-5 Bulletin Board - Saabnet.com
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Re: codes p1312 and 0748 + details...ideas?
Posted by saabdoc [Email] (more from saabdoc) on Sat, 18 Sep 2010 13:08:43
In Reply to: codes p1312 and 0748 + details...ideas?, tonystarks, Sat, 18 Sep 2010 10:50:35
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One is an engine fault, the other is a transmission fault
P1312 is from a fault with the IDM (Ignition Discharge Module) combustion detection circuit. You will need to replace the IDM and it's a good idea to intall fresh spark plugs (correct NGKs)
P0748 is a transmission fault. Its a fault with the Pressure control solenoid circuit. It could be a problem with wiring or the valve itself. There was a Tech case were someone found battery acid had dripped on the wireing for the Transmission located under the battery.
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