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C0321 Buick Code - Range Actuator Lock Control Circuit

- Code Popularity: 934 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC C0321 Buick?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • 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
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How to Fix the DTC C0321 Buick?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C0321 Buick code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code C0321 Buick Description

The transfer case range actuator is also known as the transfer case motor, transfer case encoder motor, or transfer case two/four-wheel drive actuator assembly. The transfer case range actuator lock solenoid is part of the transfer case range actuator and cannot be serviced separately.
The transfer case control module controls the transfer case range actuator lock solenoid. The transfer case range actuator lock solenoid is released by being energized. This is accomplished by grounding the transfer case lock solenoid control circuit during range changes, and 4WD/AWD Automatic mode. Locking action is applied when power or ground is taken away from the lock solenoid, preventing the transfer case range actuator from moving. The system is capable of providing 2WD, 4WD High/Locked, 4WD Low, and Neutral without the need of additional vehicle power to hold the transfer case in these positions.

OBDII Code C0321 Buick - Range Actuator Lock Control Circuit - AutoCodes.com
C0321 Buick Code - Range Actuator Lock Control Circuit

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Code C0321 Buick comments

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