AutoCodesGeneric – B1892

B1892 Code - Lamp Air Bag Warning Indicator Circuit Short To Ground or Open

Quick Answer

The air bag indicator is designed to illuminate for 6 (±2) seconds when the ignition switch is turned to the RUN position. Common causes include Blown Air Bag Warning Light bulb, Air Bag Warning Light bulb harness is open or shorted, Air Bag Warning Light bulb 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
B1892 indicates Lamp Air Bag Warning Indicator Circuit Short To Ground or Open.
Common causes
Common causes include Blown Air Bag Warning Light bulb, Air Bag Warning Light bulb harness is open or shorted, Air Bag Warning Light bulb 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 14,881
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 26, 2019
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Code B1892 Description

The air bag indicator is designed to illuminate for 6 (±2) seconds when the ignition switch is turned to the RUN position. This initial 6 seconds of illumination is considered the normal operation and is called Prove-Out of the air bag indicator. The air bag indicator is then used to warn the driver that there is a fault in the air bag Supplemental Restraint System (SRS). The air bag Restraint Control Module (RCM) monitors the air bag indicator for open and short to ground conditions. If the ECS detects an open or short to ground condition on the air bag indicator circuit, it will store a Diagnostic Trouble Code (DTC) B1892 in memory. If the RCM detects a circuit failure on the connection to the cluster, it will store diagnostic trouble code (DTC) B1891 in memory and flash lamp on the air bag indicator.
OBDII Code B1892 - Lamp Air Bag Warning Indicator Circuit Short To Ground or Open - AutoCodes.com
B1892 Code - Lamp Air Bag Warning Indicator Circuit Short To Ground or Open

What are the Possible Causes of the DTC B1892?

  • Blown Air Bag Warning Light bulb
  • Air Bag Warning Light bulb harness is open or shorted
  • Air Bag Warning Light bulb circuit poor electrical connection
  • Faulty Instrument Cluster Module
  • Faulty Restrain Control Module (RCM)

How to Fix the DTC B1892?

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 B1892 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.

Need more information about the B1892 code?

Need more information on how to fix the B1892 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1892 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

  • B1892 Ford — Lamp Air Bag Warning Indicator Circuit Short To Ground or Open
  • B1892 Lincoln — Lamp Air Bag Warning Indicator Circuit Short To Ground or Open
  • B1892 Mazda — Lamp Air Bag Warning Indicator Circuit Short To Ground or Open
  • B1892 Mercury — Lamp Air Bag Warning Indicator Circuit Short To Ground or Open

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 B1892 Code

1. What are the common symptoms of OBDII code B1892?

- The common symptoms include the airbag warning light staying illuminated on the dashboard, indicating a potential issue with the airbag system.

2. What does the OBDII code B1892 indicate?

- OBDII code B1892 indicates a fault in the Lamp Air Bag Warning Indicator Circuit, specifically a short to ground or an open circuit.

3. What are the possible causes of OBDII code B1892?

- The code B1892 can be caused by damaged wiring in the airbag warning indicator circuit, a short to ground or an open circuit in the system, or a faulty airbag warning indicator module.

4. How can I diagnose the issue related to OBDII code B1892?

- To diagnose the issue, you may need to perform a thorough inspection of the airbag warning indicator circuit, check for damaged wiring, test the indicator module, and use a scan tool to read the code and further diagnose the problem.

5. Is it safe to drive with OBDII code B1892 present?

- It is not recommended to drive with OBDII code B1892 present because it indicates a potential issue with the airbag system, which is a critical safety component in the vehicle.

6. How can I repair OBDII code B1892?

- Repairing OBDII code B1892 may involve fixing any damaged wiring in the airbag warning indicator circuit, replacing the indicator module if necessary, and clearing the code with a scan tool after the repairs.

7. Can I reset OBDII code B1892 without fixing the underlying issue?

- While you can clear the code temporarily, it is important to address the underlying issue causing OBDII code B1892 to prevent potential safety risks associated with the airbag system.

8. Are there any safety precautions to take when working on OBDII code B1892?

- When working on OBDII code B1892 related issues, always disconnect the vehicle's battery before inspecting or repairing any components in the airbag system to prevent accidental deployment.

9. How long does it typically take to repair OBDII code B1892?

- The time to repair OBDII code B1892 can vary depending on the exact cause of the issue and the extent of the repairs needed. It may take anywhere from a few hours to a full day to complete the repairs.

10. Should I seek professional help for repairing OBDII code B1892?

- Due to the critical nature of the airbag system and the complexity of diagnosing and repairing OBDII code B1892, it is recommended to seek professional help from a qualified mechanic or technician to ensure the issue is properly addressed.

Discuss the causes and fixes for B1892 OBDII Code

  • I just bought a 5sp 2002 Ford Ranger 2.3L Regular cab with 2WD. The check engine light is on and these are the following codes being given:
    B1318
    B1869
    B1892
    P1520 x2
    P1512
    P1000
    I'm trying to find out what each of the these mean, what's causing them to be thrown, and how to fix the issue. Any and all help will be greatly appreciated. Thank you.

  • The B1869 are B1892 are related to the Air Bag warning light, check if the light comes ON for a few seconds when you start the engine. We couldn't find any information in the service manual for the B1318. The P1520 and P1512 are for the Intake Manifold Runner and dont worry about the P1000.

    B1869 2002 Ford Pickup - Lamp Air Bag Warning Indicator Circuit Open
    Read more: https://www.autocodes.com/b18...

    B1892 2002 Ford Pickup - Lamp Air Bag Warning Indicator Circuit Short To Ground or Open
    Read more: https://www.autocodes.com/b18...

    P1520 Ford - Intake Manifold Runner Control Circuit Fault
    Read more: https://www.autocodes.com/p15...

    P1512 Ford - Intake Manifold Runner Control Input Error Bank 1
    Read more: https://www.autocodes.com/p15...

    P1000 Ford - On Board Diagnostic System Readiness Test Not Complete
    Read more: https://www.autocodes.com/p10...

  • Thank you very much for your help and response. The B1318 was for a low battery voltage code. My battery was able to be recharged without issues, and I dumped the memory by grounding the negative with the positive connected to clear any false codes being thrown because someone was messing around with the electrical systems. Anyhow, the only code I am receiving now is P1520, because someone completely removed the Intake Manifold Runner Control. I've found one vacuum line and the electrical plugin, but I am having trouble finding the second vacuum hose associated with this part. Do you have any advice on where I might find a detailed schematic for this part and it's connections?

  • Find diagrams on the Ford service manual is very difficult, and I couldn't find anything that could help, but I found this image online. I hope it helps

  • Yeah, I've seen that one. I've found the long hose, the bolt hole, and the electrical clip. Where the second hose is or attaches, I have yet to discover. Thank you very much for your help.

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