Greetings Patrick,
The first item is surely to get the line pressure checked so that you are not working in the dark. The condition of the A solenoid seat is a also possible alternative cause, e.g. wear or obstruction, neither will show as a code.
Cheers, Trevor.
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Trevor, New Zealand.
As a child, on cold mornings I gladly stood in cowpats to warm my bare feet, but I detest bull$hit!
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