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.
At a glance
- Usually lights the check-engine light
How it works
The 4WD range sensor reports the transfer case's position, and the control module compares that signal with the commanded range. This code sets when the signal is present but falls outside the expected pattern for the selected position, which can happen if the shift motor stops short or the sensor has drifted.
Common causes
Most likely first.
- Range sensor signal drift
- Shift motor did not fully complete the range change
- Sensor element aged beyond calibration window
Symptoms
- Check engine or 4WD warning light may be on
- Displayed 4WD range may not match the selected range
- Range changes may be incomplete or unreliable
How to diagnose it
- Capture freeze-frame data and scan commanded versus reported transfer-case range, including any actuator or position-sensor codes.
- Select ranges according to the owner's procedure and check whether the displayed range follows each command consistently.
- Inspect the range sensor and shift-motor harness, connectors, seals, and pins for chafing, moisture, corrosion, or pin push-back.
- While monitoring live range data, gently move the accessible harness to see whether the reported position changes intermittently.
- If the wiring is sound, check shift-motor travel and compare range sensor output at each position with the manufacturer's specification.
Common fixes
- Repair chafed wiring or restore a loose or pushed-back connector pin.
- Clean and reseal a water-affected range sensor connector.
- Repair or replace a shift motor that does not complete the commanded range change.
- Replace a range sensor that has drifted outside the manufacturer's calibration specification.
Can I keep driving?
Avoid demanding 4WD use if the displayed range does not match the selected range or changes unreliably. An incomplete transfer-case shift can leave the vehicle in an unexpected drive mode or increase drivetrain strain.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.