P2774 Possible Causes
- Faulty four-wheel drive low switch
- Four-wheel drive low switch harness is open or shorted
- Poor electrical connection in four-wheel drive switch circuit
How to Fix Code P2774
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
Check Engine Light on (or Service Engine Soon warning light)
P2774 Meaning
The Transmission Control Module (TCM) monitors the signal from the four-wheel drive low switch circuit. The TCM sets the OBDII code when the four-wheel drive low switch circuit is outside factory specifications.