AutoCodes – Cadillac – C0398 Cadillac

C0398 Cadillac Code - Range Actuator Position - Range Position Correlation

Quick Answer

The Transfer Case Control Module always monitors the Gear Position Sensor signal circuit and the Transfer Case Range Actuator Position Sensor signal circuit. Common causes include Faulty Transfer Case Range Actuator Position Sensor, Transfer Case Range Actuator Position Sensor harness is open or shorted, Transfer Case Range Actuator 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: C0398 Cadillac indicates Range Actuator Position - Range Position Correlation.
Common causes: Common causes include Faulty Transfer Case Range Actuator Position Sensor, Transfer Case Range Actuator Position Sensor harness is open or shorted, Transfer Case Range Actuator 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 1,130

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 12, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C0398 Cadillac Description

The Transfer Case Control Module always monitors the Gear Position Sensor signal circuit and the Transfer Case Range Actuator Position Sensor signal circuit. The signal voltage values are converted to degrees to determine the position of the transfer case. The Transfer Case Control Module continuously compares the position of the Transfer Case Range Actuator Position Sensor to that of the Gear Position Sensor. If the positions do not match within a pre-determined range, it is considered an error and a fault is set. The Transfer Case Range Actuator Position Sensor is a higher resolution sensor and is more accurate but requires the Gear Position Sensor for correlation check at ignition ON and during transfer case range changes. The Diagnostic Trouble Code (DTC) will be set when the Range Actuator Position Sensor and the Range Position Sensor are both showing valid positions but differ by greater than a predetermined amount when no range change is in progress. The Transfer Case Range Actuator Position Sensor, also known as the incremental position sensor, is part of the Transfer Case Motor. The Gear Position Sensor, also known as the Transfer Case Range Actuator Position Sensor, the Two/Four Wheel Drive Actuator Position Sensor, or the rotational position sensor.

OBDII Code C0398 Cadillac - Range Actuator Position - Range Position Correlation - AutoCodes.com — C0398 Cadillac Code - Range Actuator Position - Range Position Correlation

What does this mean?

What are the Possible Causes of the DTC C0398 Cadillac?

Faulty Transfer Case Range Actuator Position Sensor
Transfer Case Range Actuator Position Sensor harness is open or shorted
Transfer Case Range Actuator Position Sensor circuit poor electrical connection
Faulty Transfer Case Range Actuator Position Sensor (part of the Transfer Case Motor or Transfer Case Two/Four Wheel Drive Actuator)
Faulty Transfer Case Control Module

How to Fix the DTC C0398 Cadillac?

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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C0398 Cadillac 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 C0398 Cadillac Code

1. What are the common symptoms of OBDII code C0398 Cadillac?

The common symptoms of code C0398 include issues with the range actuator position, such as difficulty shifting gears or erratic shifting behavior.

2. What could cause the OBDII code C0398 Cadillac to appear?

The code C0398 typically indicates a correlation issue between the range actuator position and the range position sensor, often caused by a faulty sensor or wiring issue.

3. How can I diagnose the OBDII code C0398 Cadillac?

Diagnosing code C0398 usually involves using a scan tool to read the error code, inspecting the range actuator position sensor and wiring, and testing the sensor's functionality.

4. What are some repair tips for resolving the OBDII code C0398 Cadillac?

Repairing code C0398 may involve replacing the range actuator position sensor, repairing any damaged wiring, or recalibrating the sensor to ensure proper alignment.

5. Can I drive my Cadillac with the OBDII code C0398 present?

It is not recommended to drive your Cadillac with the OBDII code C0398 present, as it can lead to further transmission issues and potential safety hazards.

6. How much does it typically cost to repair the OBDII code C0398 Cadillac?

The cost of repairing code C0398 can vary depending on the exact cause of the issue, but it may range from $200 to $500 for parts and labor.

7. Is it possible to clear the OBDII code C0398 Cadillac without fixing the underlying issue?

Clearing the code without addressing the underlying problem will only result in the code reappearing once the issue persists. It is essential to diagnose and repair the root cause.

8. Can a DIY enthusiast fix the OBDII code C0398 Cadillac at home?

While some DIY enthusiasts may have the skills to diagnose and repair code C0398, it is recommended to seek professional help, especially when dealing with transmission-related issues.

9. How long does it take to repair the OBDII code C0398 Cadillac?

The time needed to repair code C0398 can vary based on the extent of the issue and the availability of parts. In general, it may take a few hours to a full day to complete the repair.

10. Are there any preventative measures to avoid OBDII code C0398 Cadillac in the future?

Regular maintenance, such as checking and replacing sensors as needed, inspecting wiring for damage, and addressing transmission issues promptly, can help prevent the occurrence of code C0398 in the future.