P271F
Electronic Gear Shift - Position Not Learned
The shift-by-wire controller did not complete the position learning routine for the gear selector. Without learned end stops the controller cannot map selector positions to gear requests.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: medium
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
Ordered by how often each turns out to be the cause.
- Learning routine aborted by other DTC or low voltageCommon
- Shifter replaced without subsequent learnPossible
Parts involved
- Electronic Shifter
- Control Module
P271F is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.