Electronic Pressure Control Solenoid Open Circuit
2012-2018 Ford Focus Electric Electric Motor 🇨🇦
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
- P0070Ambient Air Temperature Sensor Circuit
- P0071Ambient Air Temperature Sensor Range/Performance
- P0072Ambient Air Temperature Sensor Circuit Low
- P0073Ambient Air Temperature Sensor Circuit High
- P0115Engine Coolant Temperature (ECT) Sensor 1 Circuit
- P0116ECT Sensor 1 Circuit Range/Performance
- P0117ECT Sensor 1 Circuit Low Input
- P0118ECT Sensor 1 Circuit High Input
- P0119ECT Sensor 1 Circuit Intermittent
- P0125Insufficient Coolant Temperature for Closed Loop Fuel Control
P1746 on Other Vehicles
Common Questions
What does code P1746 mean on a 2012-2018 Ford Focus Electric?
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 Focus Electric?
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 2012-2018 Ford Focus Electric?
Common causes of P1746 include: Faulty EPC solenoid, Wiring open to EPC solenoid, Corroded EPC solenoid connector, Damaged PCM/TCM driver circuit.