What causes P1788 on a Ford?

Open coast clutch solenoid winding Broken wire in the internal transmission harness Disconnected solenoid connector inside the pan Corroded bulkhead connector pin TCM driver fault

How do I fix P1788 on a Ford?

Test solenoid resistance at the external transmission connector Drop the pan and inspect the internal connector seating Check the internal harness for breaks Clean the bulkhead connector pins Replace the solenoid or harness section as found

P1788 3-2 Timing/Coast Clutch Solenoid Circuit Open

Q: What does P1788 mean on a Ford?

P1788 — 3-2 Timing/Coast Clutch Solenoid Circuit Open. Applies to F-150, Explorer, E-Series with E4OD and 4R100 transmissions.

Category: Powertrain - Transmission
Severity: Check Engine Light
Applies to: F-150, Explorer, E-Series with E4OD and 4R100 transmissions

What does P1788 mean on a Ford?

P1788 — 3-2 Timing/Coast Clutch Solenoid Circuit Open. This Ford-enhanced code applies to F-150, Explorer, E-Series with E4OD and 4R100 transmissions.

Common causes of P1788

Open coast clutch solenoid winding
Broken wire in the internal transmission harness
Disconnected solenoid connector inside the pan
Corroded bulkhead connector pin
TCM driver fault

How to fix P1788

Test solenoid resistance at the external transmission connector
Drop the pan and inspect the internal connector seating
Check the internal harness for breaks
Clean the bulkhead connector pins
Replace the solenoid or harness section as found