Free API
P0955moderate severityPowertrain

Auto Shift Manual Mode Circuit

on 2003 Dodge Durango 4.7L V8 · 4WD

What this code means

A general fault has been detected in the automatic shift manual mode circuit. This covers the electrical circuit that enables driver-controlled manual shifting.

Symptoms

  • Manual mode unavailable
  • Transmission warning light on
  • Shift requests ignored

Common causes

  • Faulty mode selector switch
  • Wiring or connector fault
  • Failed transmission control module
  • Poor ground connection

Diagnostic steps

  1. Scan for stored codes
  2. Inspect mode circuit wiring and connectors
  3. Test selector switch function
  4. Check TCM inputs with live data

Other Powertrain codes on this vehicle

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