Free API
P0931moderate severityPowertrain

Gear Shift Lock Solenoid Control Circuit Intermittent/Erratic

on 2002 Ford Escape 3.0L V6 Duratec · AWD

What this code means

The gear shift lock solenoid circuit is showing intermittent or erratic signals. This often results from loose connections or damaged wiring.

Symptoms

  • Intermittent shifter lock
  • Occasional inability to leave park
  • Transmission warning light flickers

Common causes

  • Loose or corroded connector
  • Chafed wiring harness
  • Failing shift lock solenoid
  • Intermittent TCM driver fault

Diagnostic steps

  1. Check for stored and pending codes
  2. Wiggle test the harness and connectors
  3. Inspect for corrosion or damage
  4. Monitor circuit while operating shifter

Other Powertrain codes on this vehicle

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