Powertrain
Definition only
Lights the check engine lamp
P2864: Shift Fork E Position Circuit Range/Performance
Standardized SAE J2012 code · P28xx codes
What does P2864 mean?
Shift fork E position sensor reports a value outside the calibrated travel window. Mechanical alignment off or sensor drift.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Common causes
- High Sensor zero point drifted
- Medium Fork shaft worn
- Low Sensor element aged beyond calibration window
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P2864 on the same make and model first.
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