Four Wheel Drive (4WD) Range Signal Circuit Range/Performance
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.
Affected components
- Four wd range sensor
- Transfer case
Common causes
- Medium likelihood: Range sensor signal drift
- Medium likelihood: Shift motor did not fully complete the range change
- Low likelihood: Sensor element aged beyond calibration window
Diagnostic notes
- The malfunction indicator lamp may illuminate
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.