Transmission not shifting

2008 DODGE AVENGER
13,300 MILES • 2.4L • 4 CYL • 2WD • AUTOMATIC
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SCOTT76
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I have a code po755 shift solenoid. I installed a new solenoid pack on it and still not shifting.
Nov 28, 2017 at 9:43 PM
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MHPAUTOS
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Possible causes low transmission fluid level, dirty transmission fluid, faulty line pressure solenoid 'B' valve. Line pressure solenoid 'B' valve harness is open or shorted. Line pressure solenoid 'B' valve circuit poor electrical connection.

I would be checking the electrical connection first.
Nov 28, 2017 at 9:55 PM