C1405 Jeep Code - Transfer Case Range Position Sensor Circuit High

C1405 indicates a problem with the Transfer Case Range Position Sensor Circuit, specifically a high voltage signal detected by the system.

Symptoms may include the 4WD system not engaging properly, warning lights on the dashboard (like the 4WD or Check Engine light), or difficulty shifting the transfer case.

Common causes include a faulty transfer case range position sensor, damaged or corroded wiring, a poor electrical connection, or a malfunctioning transfer case control module.

While the Jeep may still be drivable, the 4WD system may not function correctly, which could limit off-road or adverse weather performance. It's best to address the issue promptly.

Start by inspecting the wiring and connectors for damage or corrosion. Use a multimeter to test the transfer case range position sensor and verify the voltage signal. If needed, use a scan tool to monitor sensor data.

Repairs could involve replacing the transfer case range position sensor, repairing damaged wiring, cleaning corroded connectors, or reprogramming or replacing the transfer case control module.

Repair costs vary depending on the issue. Replacing the transfer case range position sensor may cost $100-$300, while wiring repairs or module replacements could increase the cost.

While the transfer case motor itself is not the primary cause of this code, a malfunctioning motor could indirectly affect the sensor's operation. It’s worth testing as part of the diagnosis.

If you’re experienced with electrical diagnostics and have the necessary tools, you might handle the repair yourself. Otherwise, consulting a professional mechanic is recommended.

Clearing the code without addressing the underlying problem will only provide a temporary solution, as the code is likely to return until the root cause is repaired.