What it means
The control module monitors the range actuator position sensor circuit. It sets this code when the circuit signal is faulty or does not provide a usable position reading.
At a glance
- Usually lights the ABS or stability-control warning light
- The engine or gearbox may go into limp mode
How it works
The 4WD/AWD range actuator position sensor reports the actuator's position to the control module. This code sets when the sensor circuit signal is faulty or cannot provide a usable position reading, which can prevent reliable range selection.
Common causes
Most likely first.
- Failed position sensor
- Damaged wiring or poor connection
- Corroded connector
- Fault in the actuator or control module
Symptoms
- 4WD/AWD range selection may be limited or disabled
How to diagnose it
- Read freeze-frame data and related range actuator codes, then check whether scan-tool position data is missing, fixed, or inconsistent with the selected range.
- Inspect the position sensor and actuator connectors for corrosion, loose or pushed-back pins, water intrusion, or harness damage.
- With the system monitored on a scan tool, move the accessible harness gently and watch for the position reading to drop out or change erratically.
- Using the wiring diagram, test the sensor circuit connections and signal according to the manufacturer's procedure.
- If wiring is sound, test the position sensor and actuator, then evaluate the control module only after the sensor input and circuit are verified.
Common fixes
- Repair damaged wiring or restore a loose or corroded sensor connection.
- Replace a confirmed faulty range actuator position sensor.
- Replace the actuator if its integrated sensor or internal connections are confirmed faulty.
- Repair or replace a control module only after its power, grounds, and sensor inputs test correctly.
Can I keep driving?
Range selection may be limited or unavailable, so do not rely on switching between high and low range for difficult terrain. If the vehicle remains in a suitable range, drive cautiously and avoid repeated range commands.
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.