Powertrain
Definition only
Lights the check engine lamp
P2774: Four Wheel Drive (4WD) Low Switch Circuit High
Standardized SAE J2012 code · P27xx — Transmission
What does P2774 mean?
Voltage on the 4WD-Low switch line is above the expected window. Usually an open switch or a short to battery.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Common causes
- High Open switch contacts
- Medium Switch wire shorted to B+
- Low Connector pins corroded - high contact resistance
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P2774 on the same make and model first.
P2774 in the community
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