C039E:03 Code - Range Actuator Position Sensor Direction Signal Circuit Low Voltage
Quick Answer
The Transfer Case Control Module receives input from the range actuator position sensor and the transfer case range position sensor. Common causes include Faulty Transfer Case Motor (Transfer Case Two/Four Wheel Drive Actuator), Transfer Case Motor harness is open or shorted, Transfer Case Motor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- C039E:03 indicates Range Actuator Position Sensor Direction Signal Circuit Low Voltage.
- Common causes
- Common causes include Faulty Transfer Case Motor (Transfer Case Two/Four Wheel Drive Actuator), Transfer Case Motor harness is open or shorted, Transfer Case Motor circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code C039E:03 Description
The range actuator position sensor receives an 8-volt reference signal from the Transfer Case Control Module. In return, the range actuator position sensor sends the Transfer Case Control Module a variable pulse width modulated signal indicating the position of the transfer case and a range actuator position direction signal. The range actuator position sensor, inside the A16 transfer case motor, also known as the transfer case range actuator, works in conjunction with the range position sensor to confirm the transfer case position. The range actuator position sensor is more sensitive than the transfer case range position sensor and is able to indicate to the Transfer Case Control Module the exact position of the transfer case between range changes. It is also able to show how much clutch activation is being commanded at any time.
The transfer case range position sensor, also known as the transfer case two/four-wheel drive actuator position sensor, receives a 5-volt reference signal from the Transfer Case Control Module and sends back a continuously variable pulse width modulated signal to the Transfer Case Control Module. This continuously variable signal indicates the position of the transfer case actuator.
The range actuator position sensor is more sensitive than the transfer case range position sensor but needs to reference the transfer case range position sensor value at ignition ON and mode changes. The transfer case range position sensor is an absolute sensor. The Transfer Case Control Module synchronizes the range actuator position sensor with the transfer case range position sensor at ignition ON and mode changes.
The range actuator position sensor is an integral part of the A16 Transfer Case Motor and cannot be replaced independently.
The transfer case range position sensor, also known as the gear position sensor, is an independently replaceable part.
What are the Possible Causes of the DTC C039E:03?
- Faulty Transfer Case Motor (Transfer Case Two/Four Wheel Drive Actuator)
- Transfer Case Motor harness is open or shorted
- Transfer Case Motor circuit poor electrical connection
- Faulty Transfer Case Control Module
How to Fix the DTC C039E:03?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
C039E:07 Range Actuator Position Sensor Direction Signal Circuit High Voltage
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C039E:03 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about C039E:03 Code
What does OBDII code C039E:03 mean?
Code C039E:03 indicates a low voltage issue in the Range Actuator Position Sensor Direction Signal Circuit, which is responsible for monitoring gear range actuator movement.
What are common symptoms of code C039E:03?
Symptoms may include difficulty shifting gears, erratic gear changes, or the transmission being stuck in one gear.
What causes code C039E:03?
Common causes include faulty wiring or connectors in the direction signal circuit, a damaged range actuator position sensor, or an issue with the transmission control module (TCM).
Can a low battery cause code C039E:03?
Yes, low battery voltage or poor electrical connections can potentially lead to this code by impacting the sensor's ability to operate correctly.
How can I diagnose code C039E:03?
Start by inspecting the wiring and connectors for damage or corrosion. Then, test the range actuator position sensor and check for proper voltage readings in the circuit.
Can code C039E:03 affect vehicle drivability?
Yes, this code can cause transmission-related issues such as gear selection problems, which may impact drivability.
Is it safe to drive with code C039E:03?
Driving with this code may lead to further transmission damage, so it’s recommended to address the issue promptly.
How do you fix code C039E:03?
Repairs may involve replacing damaged wiring, connectors, or the range actuator position sensor, and ensuring the TCM is functioning properly.
Can a bad range actuator position sensor trigger code C039E:03?
Yes, a faulty or malfunctioning range actuator position sensor is a common cause of this code.
Do I need professional help for code C039E:03?
While some issues like inspecting wiring can be done at home, addressing sensor or TCM problems may require professional diagnostic tools and expertise.
Discuss the causes and fixes for C039E:03 OBDII Code
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