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Home >> Dodge and Ram >> 2023 >> ProMaster 2500 >> Repair and Diagnosis >> Transmission >> Automatic Trans >> 948TE/9HP48 - DTCS P0887-00 To P1D90-00 >> DTC Troubleshooting >> P1629-00-TCM Internal-Solenoid Supply >> Possible Causes

Possible Causes

Possible Causes
PRESSURE REGULATOR B, C, D, OR E CIRCUIT SHORT TO GROUND
PRESSURE REGULATOR B, C, D, OR E CIRCUIT SHORT TO VOLTAGE
PRESSURE REGULATOR B, C, D, OR E CIRCUIT SHORT TO ANOTHER CIRCUIT
VALVE BODY
TRANSMISSION CONTROL MODULE (TCM)

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