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2014 RAM 2500
6.7L I6 Cummins Diesel•4WD•AUTOMATIC•diesel•turbo
16 active safety recalls on this vehicle — view recalls🏆Sponsored by Anonymous Sponsor
Repairs436Labor519Torque2084Fluid10DTC1792Battery1Maintenance0Recalls16
P0951moderate severityPowertrain

Auto Shift Manual Control Circuit Range/Performance

on 2014 Ram 2500 6.7L I6 Cummins Diesel · 4WD

What this code means

The automatic shift manual (ASM) control circuit is reading values outside the expected range or performing erratically. This affects manual mode shifting in automatic transmissions with a tap-shift or paddle-shift feature.

Symptoms

  • Manual shift mode not working
  • Erratic or delayed gear changes
  • Transmission warning light on

Common causes

  • Faulty shift selector switch
  • Damaged wiring or connectors in shift circuit
  • Failed transmission control module
  • Corroded or loose ground connection

Diagnostic steps

  1. Scan for related transmission codes
  2. Test shift selector switch operation
  3. Inspect wiring and connectors for damage
  4. Check TCM inputs with scan tool live data
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