P279E
Four Wheel Drive (4WD) Range Signal Circuit Range/Performance
What it means
The 4WD range signal does not match expected value for the commanded transfer case position. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
Is it safe to drive?
This code points to a problem that can cause damage or affect safety. Avoid driving and have the vehicle diagnosed promptly.
Most likely causes
Range sensor signal drift
mediumA plausible cause — test and verify before replacing parts.
Shift motor did not fully complete the range change
mediumA plausible cause — test and verify before replacing parts.
Sensor element aged beyond calibration window
lowLess common, but worth ruling out after the more likely causes.
Related help
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