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AutoCodes - Generic - B0984

B0984 Code - Left Headlamp Light Distribution Shutter Control Circuit Malfunction

- Code Popularity: 1,849 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
By AutoCodes.com - Updated Mar 11, 2021
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|B0984 code possible causes

  • Faulty Left Headlamp Assembly
  • Left Headlamp Assembly harness is open or shorted
  • Left Headlamp Assembly circuit poor electrical connection

|How do I fix code B0984 code?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

Does your car have Safety Recalls? → Check here

|Cost of diagnosing B0984 code

Labor: 1.0

The cost of diagnosing the B0984 code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

|What are B0984 code possible symptoms?

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

|B0984 code description

Battery positive voltage is applied to the headlamp control module at all times. The headlamp control module has a normal operational voltage range of about 12.5-16 V and is only fully functional with the ignition switch is in the RUN position and the headlamp switch in the AUTO position. The communications enable signal from the Body Control Module (BCM) wakes the headlamp control module microprocessor. The headlamp control module receives serial data messages from the Engine Control Module (ECM), Transmission Control Module (TCM), Electronic Brake Control Module (EBCM), and BCM with information regarding power mode, speed, steering angle, transmission gear selection, and headlamp switch status. The headlamp control module calculates the headlamp angle and sends commands to the left and right adaptive forward lighting system headlamp actuators. The headlamp actuators drive the headlamps to the position commanded by the headlamp control module. The headlamp control module monitors the headlamp actuator motor control circuits for proper circuit continuity and for shorts to ground or voltage. If a malfunction is detected, a DTC will be stored in memory and the driver will be notified with a message displayed over the driver information center located on the instrument cluster.

OBDII Code b0984 - Left Headlamp Light Distribution Shutter Control Circuit Malfunction - AutoCodes.com
B0984 Code - Left Headlamp Light Distribution Shutter Control Circuit Malfunction

|Need more information with the B0984 code?

Need more information on how to fix the B0984 code? Get Access to Factory Service Manuals

|Information for specific makes

  • B0984 BUICK Left Headlamp Light Distribution Shutter Control Circuit Malfunction
  • B0984 CADILLAC Left Headlamp Light Distribution Shutter Control Circuit Malfunction
  • B0984 CHEVROLET Left Headlamp Light Distribution Shutter Control Circuit Malfunction
  • B0984 GMC Left Headlamp Light Distribution Shutter Control Circuit Malfunction

|Need help with a B0984 code?

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|B0984 code comments

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