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Engine-Codes – Generic – B1C13

B1C13 Code - Driver Active Headrest Control Circuit High

Quick Answer

The B1C13 code indicates a problem with the driver's active headrest control circuit being too high. Common causes include Faulty wiring or connectors in the control circuit, Defective control module for the active headrest system, Damage to the headrest mechanism itself. 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
B1C13 indicates Driver Active Headrest Control Circuit High.
Common causes
Common causes include Faulty wiring or connectors in the control circuit, Defective control module for the active headrest system, Damage to the headrest mechanism itself.
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.
What is this?
Table of contents Created and updated by William Orellana on Aug 19, 2024
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Code B1C13 Description

The B1C13 code indicates a problem with the driver's active headrest control circuit being too high. Active headrests are a safety feature in vehicles that automatically move forward in the event of a rear-end collision to reduce the risk of whiplash injury to the driver. When this code is triggered, it means that there is an issue with the circuit that controls this feature. This could potentially impact the effectiveness of the active headrest system in the event of a collision, compromising the safety of the driver.

OBDII Code B1C13 - Driver Active Headrest Control Circuit High
B1C13 Code - Driver Active Headrest Control Circuit High

Common Causes of B1C13

  1. Faulty wiring or connectors in the control circuit
  2. Defective control module for the active headrest system
  3. Damage to the headrest mechanism itself
  4. Electrical issues such as a short circuit or power surge

Symptoms of B1C13

  1. Malfunctioning active headrest system
  2. Warning light on the dashboard
  3. Inability to adjust the headrest position
  4. Unusual noises coming from the headrest mechanism
  5. Loss of power to the headrest controls

How to Fix B1C13

  1. Begin by conducting a thorough inspection of the active headrest system to identify the specific cause of the issue.
  2. Check the wiring and connectors for any signs of damage or corrosion, repairing or replacing as necessary.
  3. Test the control module to determine if it is functioning correctly; replace if faulty.
  4. Inspect the headrest mechanism for any physical damage or malfunctions, repairing or replacing components as needed.
  5. Clear the diagnostic trouble codes from the vehicle's system and test the active headrest system to ensure that the issue has been resolved.

Cost to Fix B1C13

The cost of repairing a B1C13 code related to the driver active headrest control circuit high can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. In general, you can expect to pay anywhere from $150 to $500 for parts and labor. Keep in mind that additional diagnostic time may be required to pinpoint the exact problem, and labor rates can differ based on location and the type of vehicle being serviced. It's best to consult with a professional mechanic for a more accurate estimate.

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Code B1C13 Information for Specific Makes

Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service

  • Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
  • Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
  • Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
  • Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.

Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.

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 B1C13 Code

1. What does the OBDII code B1C13 mean?

The B1C13 code indicates a high voltage issue in the Driver Active Headrest Control Circuit, which is part of the vehicle's safety system designed to reduce whiplash injuries.

2. What are the common symptoms of the B1C13 code?

Symptoms may include an illuminated airbag warning light, the active headrest not functioning properly, or no noticeable headrest movement during activation.

3. What causes the B1C13 code to appear?

Common causes include a faulty active headrest actuator, damaged wiring or connectors in the circuit, or a malfunctioning control module.

4. Is it safe to drive with the B1C13 code?

Driving may still be possible, but the active headrest safety feature may be compromised, increasing the risk of injury in a collision.

5. How can I diagnose the B1C13 code?

Start by using an OBDII scanner to confirm the code, then inspect the wiring, connectors, and the active headrest actuator for damage or loose connections.

6. Can a weak battery cause the B1C13 code?

Yes, a weak or failing battery can sometimes cause electrical issues, including triggering this code, due to voltage irregularities.

7. What is the typical repair for the B1C13 code?

Repairs may include replacing the faulty headrest actuator, repairing damaged wiring, or reprogramming or replacing the control module.

8. How much does it cost to fix a B1C13 code?

Repair costs vary depending on the root cause, but replacing an active headrest actuator can range from $200 to $500, excluding labor.

9. Can I reset the B1C13 code without making repairs?

You can clear the code with an OBDII scanner, but if the underlying issue isn’t resolved, the code will likely return.

10. What should I do if I can’t fix the B1C13 code myself?

If you’re unable to diagnose or repair the issue, it’s best to consult a qualified mechanic or dealership with experience in vehicle safety systems.

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