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P0957moderate severityPowertrain

Auto Shift Manual Mode Circuit Low

on 1999 Dodge Dakota 3.9L V6 Magnum · 4WD

What this code means

The automatic shift manual mode circuit is reading a lower than expected voltage. This suggests a short to ground or open in the mode circuit wiring.

Symptoms

  • Manual mode does not engage
  • Transmission stuck in auto mode
  • Warning light illuminated

Common causes

  • Short to ground in wiring
  • Faulty mode selector switch
  • Corroded connector pins
  • Failed transmission control module

Diagnostic steps

  1. Scan for stored codes
  2. Measure circuit voltage at connector
  3. Inspect wiring for shorts to ground
  4. Test switch resistance

Other Powertrain codes on this vehicle

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