P2793
Gear Shift Direction Circuit
The gear-shift direction circuit cannot detect the commanded shift direction (up or down) on an automated manual or sequential transmission.
- 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.
- Open sensor or broken signal wireCommon
- Corroded sensor connectorPossible
Parts involved
- Shift Direction Sensor
- Shifter Assembly
- Wiring Harness
P2793 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.