What does code P2771 mean?

Q: What does code P2771 mean?

Four Wheel Drive (4WD) Low Switch Circuit. P2771 indicates that the four-wheel-drive (4WD) low-range switch circuit is not reporting the expected voltage or state to the control module, so the vehicle cannot confirm that low range has engaged. The computer detects an open, short, or out-of-range signal from the switch that monitors the transfer case's low-range position.

DTC codes / P27xx · Transmission / P2771

P2771Four Wheel Drive (4WD) Low Switch Circuit

P2771 indicates that the four-wheel-drive (4WD) low-range switch circuit is not reporting the expected voltage or state to the control module, so the vehicle cannot confirm that low range has engaged. The computer detects an open, short, or out-of-range signal from the switch that monitors the transfer case's low-range position.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaTransmission

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.