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2005 RAM 1500
5.7L V8•4WD•gas•HEMI
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Repairs0Labor517Torque141Fluid11DTC1809Battery1Maintenance0Recalls0
P0912high severityPowertrain

Gate Select Position Circuit Low

on 2005 Ram 1500 5.7L V8 · 4WD

What this code means

The gate select position circuit voltage is reading lower than normal. This usually points to a short to ground or sensor failure in the shift-by-wire system.

Symptoms

  • No or erratic shifting
  • Transmission fault light
  • Limp mode

Common causes

  • Short to ground in wiring
  • Faulty gate select position sensor
  • Corroded connector pins
  • Failed transmission control module

Diagnostic steps

  1. Retrieve and record trouble codes
  2. Check gate select sensor signal wire for short to ground
  3. Backprobe sensor voltage at connector
  4. Replace sensor if out of spec
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