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Home >> Dodge and Ram >> 2018 >> Charger Pursuit, 5.7L Eng VIN T, 4WD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> (Transmission Control Module (TCM) - Electrical Diagnostics - Nag1 Automatic Transmission) >> DTC Troubleshooting >> P1629-TCM Internal - Solenoid Supply/ Watchdog >> Possible Causes

Possible Causes

Possible Causes
(T78) SOLENOID SUPPLY VOLTAGE CIRCUIT SHORT TO VOLTAGE
TRANSMISSION CONTROL MODULE

Always perform the NAG1 Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  NAG1 TCM - PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE   .