FixVault

Possible Causes

Possible Causes 
(F856) 5-VOLT SUPPLY CIRCUIT OPEN
(F856) 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND
(T38) LINE PRESSURE SIGNAL CIRCUIT OPEN
(T38) LINE PRESSURE SIGNAL CIRCUIT SHORTED TO GROUND
LINE PRESSURE SENSOR
POWERTRAIN CONTROL MODULE (PCM)

Always perform the Pre-Diagnostic Troubleshooting Procedure before proceeding. See  DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure  .