Hi,
The electrical issue sounds like a loose connection. Have you checked to make sure the battery terminals are clean and tight? Also, under the dash there is a fuse box. Check to make sure the HVAC fuse for the controller is tight.
I need some clarification. Your heading indicates the power outlet went out and in the post you say the XM radio went out. Is this an aftermarket XM unit plugged into the aux power outlet?
Now here is something you will likely find interesting. Read through this. It is right out of my manual.
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1995 Buick Riviera V6-3.8L SC VIN 1
P0640
Vehicle ALL Diagnostic Trouble Codes ( DTC ) Testing and Inspection P Code Charts P0640
P0640
Invalid Diagnostic Trouble Code
This vehicle does NOT generate this Trouble Code.
Alldata Editor Note: There is one in particular after market Scantool that still has not been updated and generates these and other Invalid DTC codes.
We've talked with numerous Alldata users, and they've told us that the work-around is to use the DTC description, and find a code that matches it. A number of our users have used Code P1640 (close match to P640) when the description matches a Quad Driver 1 Problem.
Our suggestion is:
1. If you have a second Scantool in the shop from a different manufacturer, it will probably read the Datastream correctly and generate a proper code.
If you don't have access to a second Scantool,
2. Call you Scantool manufacturer and let them advise you on a proper course of action.
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Let me know if you have a different scan tool that you can access to rescan the computer.
Joe
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Sunday, November 8th, 2020 AT 7:21 PM
