Possible Causes
| Possible Causes |
|---|
| (F856) 5-VOLT SUPPLY CIRCUIT OPEN |
| LINE PRESSURE SENSOR CONNECTION |
| (T118) LP VFS CONTROL CIRCUIT OPEN |
| (F856) 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND |
| (T118) LP VFS CONTROL CIRCUIT SHORTED TO GROUND |
| TRANSMISSION CONTROL RELAY OUTPUT CIRCUIT |
| LINE PRESSURE SENSOR |
| STUCK OR STICKING MAIN REGULATOR VALVE |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .