OBD Codes List

Diagnostic reference · P0908

P0908

Gate Select Position Circuit A Intermittent

System
Transmission (P code)
Lamp
Check Engine Light
Category
Powertrain - Transmission

What it means

P0908 means Gate Select Position Circuit A Intermittent.

Check these first

  • A gate select position sensor A connector losing contact
  • Chafed sensor A wiring at the selector
  • A sensor A element failing when hot
  • A loose selector gate adding noise

What to do next

  1. Road test and watch gate select position A data
  2. Wiggle test the sensor A connector and harness
  3. Sweep the selector and watch for dropouts
  4. Check the selector gate for loose hardware
  5. Replace the sensor if the signal drops
  6. Clear the code and retest

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Updated

Generic SAE J2012 definition. Last updated 2026-10-10.