P1746high severityPowertrain
Electronic Pressure Control Solenoid Open Circuit
on 1996 Ford Bronco 5.0L V8 302 Windsor · 4WD
What this code means
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.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1