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Clear the codes if you can, some of them can be old. I usually check and clear when I change the oil.
The A-1 code should go away, if not, clean the switch contacts.
A3: 1-4-2 is a faulty brake pedal switch. Of course, if the brake pedal switch is really broken, then you wouldn't be able to shift out of park.
A-7 = ignore for now, that is your instrument panel and probably left over code.
The A-6 is your ignition!! Was the car door closed when you read the codes? Sometimes an open door will trigger a flicker. This is the one you need to get a reading on.
Klaus
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Volvos should be saved from the junk yards, not donated.
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