P2773
Four Wheel Drive (4WD) Low Switch Circuit Low
Voltage on the 4WD-Low switch line is below the expected window. Usually a short to ground or a stuck-closed switch.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: easy
Common causes
Ordered by how often each turns out to be the cause.
- Switch wire shorted to groundCommon
- Switch stuck in closed positionPossible
- Connector pins corroded - high contact resistanceLess likely
Parts involved
- Four Wd Low Switch
- Wiring Harness
P2773 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.