OBD Codes List

Diagnostic reference · P283A

P283A

Shift Fork B Position Circuit Intermittent

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

What it means

P283A means Shift Fork B Position Circuit Intermittent.

Check these first

  • A shift fork B position circuit fault that comes and goes
  • A corroded or loose shift fork B position sensor connector
  • A failing shift fork B position sensor
  • Heat or vibration shifting the shift fork B position signal

What to do next

  1. Read shift fork B position on a scan tool while wiggling the harness
  2. Test the shift fork B position circuit for intermittent open and short faults
  3. Check the shift fork B position sensor connector pins for corrosion
  4. Check transmission fluid level and condition
  5. Replace the shift fork B position sensor if the fault returns
  6. Clear the code and retest

Look up another code

Enter a full code or a symptom. Press / to search. How to read a code

Type a code above, or start from a symptom or a common code.

Updated

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