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Home >> Alfa Romeo >> 2019 >> Giulia Base, AWD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> 8HP50/850RE - DTCS P0219-00 To P1D91-00 >> DTC Troubleshooting >> P085F-00 - Up And Down Shift Switch Circuit Range/Performance >> Possible Causes

Possible Causes

Possible Causes
PADDLE SHIFT SWITCH STUCK
PADDLE SHIFT SWITCH
(T830) TAP SWITCH SIGNAL CIRCUIT SHORTED TO GROUND
(T831) TAP SWITCH RETURN CIRCUIT SHORTED TO GROUND
TRANSMISSION CONTROL MODULE (TCM)

Always perform the DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  . 

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