AutoCodes – Generic – C0392:08

C0392:08 Code - Transfer Case Range Position Sensor Circuit Performance Signal Invalid

Quick Answer

The Transfer Case Control Module receives input from the Transfer Case Gear Position Sensor, also known as the range position sensor or the rotational position sensor. Common causes include Faulty Transfer Case Range Position Sensor, Transfer Case Range Position Sensor harness is open or shorted, Transfer Case Range Position Sensor 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
C0392:08 indicates Transfer Case Range Position Sensor Circuit Performance Signal Invalid.
Common causes
Common causes include Faulty Transfer Case Range Position Sensor, Transfer Case Range Position Sensor harness is open or shorted, Transfer Case Range Position Sensor 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.
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Code Popularity 360
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 11, 2023
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Code C0392:08 Description

The Transfer Case Control Module receives input from the Transfer Case Gear Position Sensor, also known as the range position sensor or the rotational position sensor. The Gear Position Senso receives a 5-volt reference signal from the Transfer Case Control Module. In return the Gear Position Senso sends the Transfer Case Control Module a variable pulse width modulated signal indicating the position of the transfer case. The Gear Position Sensor works in conjunction with the range actuator position sensor, inside the A16 Transfer Case Motor, also known as the transfer case range actuator, to confirm the transfer case position. The Gear Position Sensor is more sensitive than the range actuator 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 Diagnostic Trouble Code (DTC) will be set when the transfer case control module detects a transfer case range position sensor voltage that does not constantly change but remains low, below 0.25 V, indicating a short to ground.
OBDII Code C0392:08 - Transfer Case Range Position Sensor Circuit Performance Signal Invalid - AutoCodes.com
C0392:08 Code - Transfer Case Range Position Sensor Circuit Performance Signal Invalid

What are the Possible Causes of the DTC C0392:08?

  • Faulty Transfer Case Range Position Sensor
  • Transfer Case Range Position Sensor harness is open or shorted
  • Transfer Case Range Position Sensor circuit poor electrical connection
  • Faulty Transfer Case Control Module

How to Fix the DTC C0392:08?

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C0392:08 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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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about C0392:08 Code

1. What are the common symptoms of OBDII code C0392:08?

- Common symptoms include erratic shifting of the transfer case, difficulty engaging different driving modes, and the illumination of the service 4WD light on the dashboard.

2. What causes the OBDII code C0392:08 to trigger?

- This code is triggered when the transfer case range position sensor circuit detects a performance signal that is invalid or out of range, often due to a faulty sensor or wiring issue.

3. How can I diagnose the cause of OBDII code C0392:08?

- Diagnosing this code typically involves inspecting the transfer case range position sensor, checking the wiring for any damage or loose connections, and using a scan tool to monitor sensor readings.

4. Can a DIYer repair OBDII code C0392:08 at home?

- While some basic troubleshooting like checking connections and wiring can be done at home, repairing or replacing the transfer case range position sensor may require specialized tools and expertise, best handled by a professional.

5. Is it safe to continue driving with OBDII code C0392:08 present?

- It is not recommended to continue driving with this code present, as it can lead to further damage to the transfer case components and potentially affect the vehicle's drivability and safety.

6. What are the repair options for OBDII code C0392:08?

- Repair options include replacing the transfer case range position sensor, repairing any damaged wiring, resetting the code with a scan tool, and conducting a thorough inspection to ensure proper functionality.

7. Are there any specific vehicles known to experience OBDII code C0392:08 more frequently?

- This code can occur in various vehicles with transfer case systems, including certain models from Chevrolet, GMC, Ford, and other manufacturers utilizing similar sensor technology.

8. How much does it typically cost to repair OBDII code C0392:08 at a dealership or repair shop?

- The cost of repairing this code can vary depending on the extent of the issue, but on average, expect to pay anywhere from $200 to $500 for parts and labor at a dealership or repair shop.

9. What steps can I take to prevent OBDII code C0392:08 from recurring in the future?

- To prevent this code from recurring, it's essential to perform regular maintenance on the transfer case system, including checking sensor connections, inspecting wiring for damage, and addressing any issues promptly.

10. Can resetting the OBDII code C0392:08 clear the issue permanently?

- Resetting the code may temporarily clear the issue, but if the underlying problem with the transfer case range position sensor circuit persists, the code is likely to reappear until the root cause is addressed.

1. What are common symptoms of OBDII code C0392:08 (Transfer Case Range Position Sensor Circuit Performance Signal Invalid)?

- Common symptoms include erratic shifting in the transfer case, trouble engaging or disengaging 4WD, and a warning light on the dashboard.

2. What can cause the OBDII code C0392:08 to trigger?

- This code is typically triggered by a faulty transfer case range position sensor, damaged wiring in the sensor circuit, or a poor electrical connection.

3. How can I diagnose the cause of OBDII code C0392:08?

- To diagnose this code, you can use a diagnostic scan tool to check for the specific error code, inspect the wiring and connections in the transfer case range position sensor circuit, and test the sensor itself.

4. Can I still drive my vehicle with OBDII code C0392:08 present?

- It is not recommended to drive your vehicle with this code present, as it can lead to further damage in the transfer case system and affect the performance of your 4WD system.

5. How can I repair OBDII code C0392:08?

- Repairing this code involves replacing the transfer case range position sensor if it is faulty, repairing any damaged wiring or connections in the sensor circuit, and clearing the error code.

6. Are there any DIY tips for fixing OBDII code C0392:08?

- While some DIY enthusiasts may attempt to replace the transfer case range position sensor themselves, it is recommended to have this repair done by a professional mechanic due to the complexity of the transfer case system.

7. What are the potential risks of ignoring OBDII code C0392:08?

- Ignoring this code can lead to further damage in the transfer case system, potentially causing more expensive repairs down the line and compromising the safety and performance of your vehicle.

8. Is OBDII code C0392:08 a common issue in certain vehicle makes and models?

- This code may be more common in vehicles with electronic transfer case systems, such as certain SUVs and trucks equipped with 4WD capabilities.

9. Can weather conditions affect the triggering of OBDII code C0392:08?

- Extreme weather conditions, such as heavy rain or snow, can potentially worsen the symptoms associated with this code, as moisture can affect the sensor and wiring connections in the transfer case system.

10. How long does it typically take to repair OBDII code C0392:08?

- The repair time for this code can vary depending on the extent of the issue and the availability of parts, but it generally takes a few hours to a day for a professional mechanic to diagnose and fix the problem.

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