B1938 Lincoln Code - Air Bag Passenger Circuit Short To Ground Fault
Quick Answer
The B1938 diagnostic trouble code for Lincoln vehicles indicates an issue with the airbag passenger circuit, specifically a short to ground fault. Common causes include Damaged wiring or connectors in the airbag passenger circuit, Faulty airbag module, Corrosion in the airbag system components. 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
- B1938 Lincoln indicates Air Bag Passenger Circuit Short To Ground Fault.
- Common causes
- Common causes include Damaged wiring or connectors in the airbag passenger circuit, Faulty airbag module, Corrosion in the airbag system components.
- 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 B1938 Lincoln Description
The B1938 diagnostic trouble code for Lincoln vehicles indicates an issue with the airbag passenger circuit, specifically a short to ground fault. This means that there is an unintended connection between the passenger airbag circuit and the vehicle's ground, which can potentially compromise the proper functioning of the airbag system. The airbag system is a critical safety feature in modern vehicles, designed to deploy in the event of a collision to protect occupants from serious injury. A short to ground fault in the airbag system can prevent the airbag from deploying when needed, putting passengers at risk in the event of an accident.
Common Causes of B1938 Lincoln
- Damaged wiring or connectors in the airbag passenger circuit.
- Faulty airbag module.
- Corrosion in the airbag system components.
- Electrical interference from aftermarket accessories or modifications.
- Impact or collision that damaged the airbag system components.
Symptoms of B1938 Lincoln
- Airbag warning light illuminated on the dashboard.
- Inability to turn off the airbag system.
- Intermittent or non-functioning passenger airbag.
- Diagnostic trouble codes related to the airbag system stored in the vehicle's computer.
- Loss of communication with the airbag module.
How to Fix B1938 Lincoln
- Begin by diagnosing the specific cause of the short to ground fault in the airbag passenger circuit using a diagnostic scan tool.
- Inspect the wiring and connectors in the airbag system for any signs of damage, corrosion, or loose connections. Repair or replace any faulty components as needed.
- Test the airbag module for proper functionality and replace it if necessary.
- Clear the diagnostic trouble codes from the vehicle's computer and reset the airbag system.
- Perform a thorough test of the airbag system to ensure that the fault has been resolved and that the system is functioning correctly.
Cost to Fix B1938 Lincoln
The cost of repairing a B1938 diagnostic trouble code for a Lincoln vehicle can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. In general, the repair costs for this type of airbag system fault can range from $200 to $500, including parts and labor. However, it's important to note that labor rates can vary significantly based on location, vehicle make and model, and the expertise of the technician. It's recommended to contact local auto repair shops for a more accurate estimate based on your specific circumstances.
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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.
Frequently Asked Questions about B1938 Lincoln Code
1. What are common symptoms of OBDII code B1938 in a Lincoln related to the Air Bag Passenger Circuit Short To Ground Fault?
- Common symptoms include the airbag warning light staying on, the airbag system not functioning properly, and potential loss of passenger side airbag deployment.
2. What are some possible causes of the B1938 OBDII code in a Lincoln?
- Possible causes include damaged wiring in the passenger airbag circuit, a faulty passenger side airbag module, or a short circuit to ground in the circuit.
3. How can I diagnose the OBDII code B1938 in a Lincoln with an Air Bag Passenger Circuit Short To Ground Fault?
- Diagnosis involves using a scan tool to read the code, inspecting the wiring and connectors in the passenger airbag circuit, and testing the airbag components for proper functioning.
4. Is it safe to drive a Lincoln with the B1938 OBDII code indicating an Air Bag Passenger Circuit Short To Ground Fault?
- It is not recommended to drive the vehicle with this fault as the passenger side airbag may not deploy in the event of a collision, potentially increasing the risk of injury.
5. How can I repair the B1938 OBDII code in a Lincoln for the Air Bag Passenger Circuit Short To Ground Fault?
- Repair involves repairing or replacing damaged wiring, fixing faulty connectors, or replacing the passenger side airbag module as needed.
6. Can the B1938 OBDII code be reset in a Lincoln after repairing the Air Bag Passenger Circuit Short To Ground Fault?
- Yes, after addressing the underlying issue causing the fault, the code can be cleared using an OBDII scan tool to reset the airbag system.
7. Are there any safety precautions to take when working on the B1938 OBDII code related to the Air Bag Passenger Circuit Short To Ground Fault in a Lincoln?
- It is crucial to disconnect the vehicle's battery before working on the airbag system to prevent accidental deployment, and to follow proper safety procedures outlined in the vehicle's service manual.
8. Can a DIY enthusiast repair the B1938 OBDII code in a Lincoln for the Air Bag Passenger Circuit Short To Ground Fault?
- While some basic diagnosis and repairs can be done by knowledgeable DIY enthusiasts, working on the airbag system requires specialized training and equipment due to safety concerns. It is recommended to consult a professional technician for such repairs.
9. How long does it typically take to repair the B1938 OBDII code in a Lincoln due to an Air Bag Passenger Circuit Short To Ground Fault?
- The repair time can vary depending on the exact cause of the fault, but it may take a few hours to a full day to diagnose, repair, and test the airbag system for proper functioning.
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