C0397:4B Code - Transfer Case Clutch Calibration Not Learned
Quick Answer
In 4WD/AWD Automatic range, the Transfer Case Control Module monitors the front and rear wheel speed sensors for slip. 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
- C0397:4B indicates Transfer Case Clutch Calibration Not Learned.
- 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 C0397:4B Description
What are the Possible Causes of the DTC C0397:4B?
- 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 C0397:4B?
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
C0397:58 Transfer Case Clutch Performance
C0397:4B (if equipped) Transfer Case Clutch Calibration Not Learned
C0397:F3 Transfer Case Clutch Worn Out Clutch
C0397:F4 Transfer Case Range Position Sensor Over Travel
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C0397:4B 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 C0397:4B Code
What does the OBDII code C0397:4B mean?
1. The code C0397:4B indicates that the transfer case clutch calibration procedure has not been successfully completed or learned by the vehicle's control module. 2.
What are the common symptoms of C0397:4B?
Common symptoms include difficulty shifting into 4WD, inconsistent or malfunctioning 4WD operation, warning lights on the dashboard, and possible drivability issues in off-road or slippery conditions. 3.
What causes the code C0397:4B to appear?
This code can be triggered by a failed calibration procedure, a malfunctioning transfer case control module, worn transfer case clutch components, or incorrect calibration settings after repairs. 4.
How is the C0397:4B code diagnosed?
Diagnosis typically involves scanning the system for codes, inspecting the transfer case system and wiring, and performing the calibration procedure using a diagnostic tool. 5.
Can I drive my vehicle with the C0397:4B code?
In most cases, the vehicle is still drivable, but 4WD functionality may be compromised, which can be dangerous in off-road or slippery conditions. 6.
How can C0397:4B be fixed?
The issue can often be resolved by recalibrating the transfer case clutch using a diagnostic scan tool. In some cases, repairs to the transfer case or related components may be necessary. 7.
Is a software update required to fix C0397:4B?
In some instances, a software update for the transfer case control module may be required to resolve calibration issues. 8.
What tools are needed to fix the C0397:4B code?
A professional diagnostic scan tool capable of performing transfer case clutch calibration and resetting the code is typically required. 9.
Can I fix the C0397:4B code myself?
If you have access to the appropriate diagnostic tool, you may be able to recalibrate the transfer case clutch. Otherwise, professional assistance is recommended. 10.
How much does it cost to repair the C0397:4B code?
Repair costs can vary depending on whether recalibration or component replacement is needed, typically ranging from $100 to $500 for diagnostics and repairs.
Discuss the causes and fixes for C0397:4B OBDII Code
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