P2806
Transmission Range Sensor Alignment
The TCM detects that the transmission range sensor mechanical alignment is outside the calibration window. Selector positions read with offset across the entire travel.
- 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.
- Selector linkage shifted on the sensor shaftCommon
- Sensor mounting bolts loosePossible
Parts involved
- Transmission Range Sensor
- Selector Linkage
P2806 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.