AutoCodes – Generic – B1C12

B1C12 Code - Driver Active Headrest Control Circuit Low

Quick Answer

The Driver Active Headrest signal circuit is driven by a solenoid that also uses a diode in parallel. Common causes include Faulty Driver Active Headrest, Driver Active Headrest harness is open or shorted, Driver Active Headrest 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: B1C12 indicates Driver Active Headrest Control Circuit Low.
Common causes: Common causes include Faulty Driver Active Headrest, Driver Active Headrest harness is open or shorted, Driver Active Headrest 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 4,708

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 Aug 24, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1C12 Description

The Driver Active Headrest signal circuit is driven by a solenoid that also uses a diode in parallel. The single electrical component of the Active Headrest (AHR) unit is the latch-release solenoid. The solenoid is connected by a 2 way pigtail wire and harness connector. The pigtail wire and 2 way connector are routed through the center of one of the headrest support posts and down through the guide sleeve to the interior of the seat back, where it connects to the seat wire harness. The solenoid is grounded at an independent dedicated ground. The AHR components itself cannot be repaired. If damaged or ineffective, the AHR must be replaced as a new assembly. If upon inspection the AHR has deployed it can be reset following the proper reset method. The Occupant Restraint Controller (ORC) monitors the Driver Active Headrest during the start up phase of the ORC module. The Driver Active Headrest communication and on board diagnostics are powered by the ORC signal.

OBDII Code B1C12 - Driver Active Headrest Control Circuit Low - AutoCodes.com — B1C12 Code - Driver Active Headrest Control Circuit Low

What does this mean?

What are the Possible Causes of the DTC B1C12?

Faulty Driver Active Headrest
Driver Active Headrest harness is open or shorted
Driver Active Headrest circuit poor electrical connection
Fault Occupant Restraint Controller (ORC)

How to Fix the DTC B1C12?

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 B1C12 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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Information for Specific Makes

B1C12 Chrysler — Driver Active Headrest Control Circuit Low
B1C12 Dodge — Driver Active Headrest Control Circuit Low
B1C12 Ford — Passenger Up/Down Mirror Motor Circuit Short To Ground
B1C12 Jeep — Driver Active Headrest Control Circuit Low
B1C12 Lincoln — Passenger Up/Down Mirror Motor Circuit Short To Ground
B1C12 Mercury — Passenger Up/Down Mirror Motor Circuit Short To Ground
B1C12 RAM — Driver Active Headrest Control Circuit Low

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 B1C12 Code

1. What are the common symptoms of OBDII code B1C12 (Driver Active Headrest Control Circuit Low)?

- The common symptoms include the driver's active headrest system not functioning properly, the headrest not moving as expected, or the airbag warning light illuminating on the dashboard.

2. What can cause OBDII code B1C12 to trigger?

- The code B1C12 is typically triggered by a fault in the driver active headrest control circuit, such as damaged wiring, a faulty control module, or a malfunctioning headrest motor.

3. How serious is OBDII code B1C12?

- While the code itself may not pose an immediate safety risk, a malfunctioning active headrest system could potentially compromise occupant safety in the event of a rear-end collision. It is advisable to address this issue promptly.

4. How can I diagnose the cause of OBDII code B1C12?

- Diagnosing the cause of B1C12 usually involves inspecting the wiring harness, connectors, and components related to the driver active headrest system. Using a diagnostic scanner to retrieve additional fault codes and data can also help pinpoint the issue.

5. Can I drive my vehicle with OBDII code B1C12 present?

- It is generally safe to drive the vehicle with the B1C12 code present, but it is recommended to have the active headrest system inspected and repaired to ensure proper functionality in the event of a collision.

6. How can I repair OBDII code B1C12?

- Repairing B1C12 typically involves fixing or replacing damaged wiring, connectors, the headrest motor, or the control module associated with the driver active headrest system. Clearing the code after the repair is essential to reset the system.

7. Is it possible to reset OBDII code B1C12 without repairs?

- Resetting the code without addressing the underlying issue may temporarily clear the fault code, but the problem will likely resurface. It is recommended to diagnose and repair the root cause of the code for a lasting solution.

8. Are there any DIY tips for troubleshooting OBDII code B1C12?

- DIY enthusiasts can start by visually inspecting the wiring and connectors of the active headrest system for any obvious signs of damage. Checking for loose connections and ensuring proper grounding can sometimes resolve the issue.

9. Can a professional mechanic help with OBDII code B1C12 diagnosis and repair?

- Yes, a qualified mechanic with experience in automotive electrical systems can efficiently diagnose and repair OBDII code B1C12. They have the necessary tools and expertise to troubleshoot the active headrest control circuit effectively.

10. How much does it cost to fix OBDII code B1C12?

- The cost of fixing OBDII code B1C12 can vary depending on the root cause of the issue, the extent of repairs needed, and labor rates in your area. It is advisable to obtain a diagnostic assessment from a mechanic to determine the exact cost.