Torque Converter Clutch Solenoid Failed On
2002-2005 Ford Explorer 4.6L V8
Description
The TCC solenoid has failed in the on/engaged position. The torque converter clutch remains engaged when it should not be, which can cause the engine to stall when coming to a stop (similar to a manual transmission with the clutch engaged).
Symptoms
- Engine stalls when stopping in Drive
- Harsh engagement at low speeds
- Vehicle shudders at slow speeds
- Check Engine Light
Common Causes
- TCC solenoid stuck mechanically on
- Electrical fault keeping solenoid energized
- Valve body TCC apply valve stuck
- Contaminated transmission fluid
Diagnostic Steps
- Test TCC solenoid — it should de-energize when commanded off
- Check solenoid wiring for shorts to power
- Check valve body for stuck TCC valve
- Monitor TCC status on scan tool during deceleration
Repair Notes
Replace TCC solenoid. Inspect valve body. May require transmission pan removal.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0001Fuel Volume Regulator Control Circuit/Open
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0003Fuel Volume Regulator Control Circuit Low
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
P1742 on Other Vehicles
Common Questions
What does code P1742 mean on a 2002-2005 Ford Explorer?
P1742 stands for "Torque Converter Clutch Solenoid Failed On". The TCC solenoid has failed in the on/engaged position. The torque converter clutch remains engaged when it should not be, which can cause the engine to stall when coming to a stop (similar to a manual transmission with the clutch engaged).
What are the symptoms of P1742 on a Ford Explorer?
Common symptoms of P1742 include: Engine stalls when stopping in Drive, Harsh engagement at low speeds, Vehicle shudders at slow speeds, Check Engine Light.
What causes P1742 on a 2002-2005 Ford Explorer?
Common causes of P1742 include: TCC solenoid stuck mechanically on, Electrical fault keeping solenoid energized, Valve body TCC apply valve stuck, Contaminated transmission fluid.