P1770 – TCC Solenoid Circuit (Ford)

Description

P1770 Ford indicates a fault in the torque converter clutch solenoid circuit.

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Symptoms

  • Shuddering
  • Slipping
  • Poor fuel economy

Causes

  • Wiring fault
  • Failed TCC solenoid
  • Connector corrosion

Diagnosis

  • Check wiring
  • Test solenoid
  • Inspect connector

Repair

  • Repair wiring
  • Replace TCC solenoid
  • Clean connector