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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
Repairs436Labor519Torque3583Fluid10DTC1737Battery1Maintenance0Recalls16
P0781moderate severityPowertrain

1-2 Shift Malfunction

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

What this code means

A problem was detected during the 1-2 gear shift. The transmission may not shift properly from first to second gear.

Symptoms

  • Delayed 1-2 shift
  • Harsh or slipping shift
  • Reduced acceleration

Common causes

  • Faulty 1-2 shift solenoid
  • Low transmission fluid
  • Dirty fluid or clogged valve body
  • Internal clutch wear

Diagnostic steps

  1. Check fluid level and condition
  2. Scan for related codes
  3. Test shift solenoid operation
  4. Inspect valve body and clutches
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