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Possible Causes

Possible Causes
INCORRECT AUTOMATIC TRANSMISSION FLUID LEVEL
AUTOMATIC TRANSMISSION FLUID DETERIORATED
MALFUNCTION OF THE TRANSMISSION LINE PRESSURE CONTROL SOLENOID (SLT)
MALFUNCTION OF THE VALVE BODY
MALFUNCTION OF THE INTERNAL TRANSMISSION
FAULT OF TRANSMISSION CONTROL MODULE (TCM)

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