Electronic Pressure Control Solenoid Open Circuit
2000-2003 Ford Excursion 7.3L V8 Power Stroke Diesel
Description
The Electronic Pressure Control (EPC) solenoid has an open circuit. The EPC solenoid regulates hydraulic line pressure in the transmission. Without proper EPC operation, transmission shifting is severely affected.
Symptoms
- Check Engine Light
- Harsh or erratic shifting
- Transmission slipping
- Limp mode (stuck in one gear)
- Transmission overheating
Common Causes
- Faulty EPC solenoid
- Wiring open to EPC solenoid
- Corroded EPC solenoid connector
- Damaged PCM/TCM driver circuit
Diagnostic Steps
- Test EPC solenoid resistance
- Inspect EPC solenoid wiring and connector
- Check for corroded pins at transmission connector
- Monitor EPC pressure on scan tool
Repair Notes
Replace EPC solenoid. Repair wiring. May require transmission pan removal.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P1746 on Other Vehicles
Common Questions
What does code P1746 mean on a 2000-2003 Ford Excursion?
P1746 stands for "Electronic Pressure Control Solenoid Open Circuit". The Electronic Pressure Control (EPC) solenoid has an open circuit. The EPC solenoid regulates hydraulic line pressure in the transmission. Without proper EPC operation, transmission shifting is severely affected.
What are the symptoms of P1746 on a Ford Excursion?
Common symptoms of P1746 include: Check Engine Light, Harsh or erratic shifting, Transmission slipping, Limp mode (stuck in one gear), Transmission overheating.
What causes P1746 on a 2000-2003 Ford Excursion?
Common causes of P1746 include: Faulty EPC solenoid, Wiring open to EPC solenoid, Corroded EPC solenoid connector, Damaged PCM/TCM driver circuit.