B1937 Lincoln Code - Air Bag Passenger Pressure Switch Circuit Open Fault
Quick Answer
The Restraints Control Module (RCM) monitors the Air Bag Passenger Pressure Switch. Common causes include Faulty Air Bag Passenger Pressure Switch, Air Bag Passenger Pressure Switch harness is open or shorted, Air Bag Passenger Pressure Switch 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
- B1937 Lincoln indicates Air Bag Passenger Pressure Switch Circuit Open Fault.
- Common causes
- Common causes include Faulty Air Bag Passenger Pressure Switch, Air Bag Passenger Pressure Switch harness is open or shorted, Air Bag Passenger Pressure Switch 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.
Code B1937 Lincoln Description
What are the Possible Causes of the DTC B1937 Lincoln?
- Faulty Air Bag Passenger Pressure Switch
- Air Bag Passenger Pressure Switch harness is open or shorted
- Air Bag Passenger Pressure Switch circuit poor electrical connection
- Faulty Restraint Control Module (RCM)
How to Fix the DTC B1937 Lincoln?
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 B1937 Lincoln 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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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 B1937 Lincoln Code
1. What are the common symptoms of OBDII code B1937 in a Lincoln related to the Air Bag Passenger Pressure Switch Circuit Open Fault?
- Common symptoms include the airbag warning light illuminating on the dashboard and potential non-deployment of the passenger side airbag in the event of a crash.
2. What are the possible causes of the Air Bag Passenger Pressure Switch Circuit Open Fault code B1937 in a Lincoln?
- The code B1937 can be triggered by a faulty passenger pressure switch, damaged wiring or connectors in the airbag system, or a malfunctioning airbag control module.
3. How can I diagnose the Air Bag Passenger Pressure Switch Circuit Open Fault in my Lincoln when code B1937 is present?
- To diagnose the issue, you may need to perform a thorough inspection of the passenger pressure switch, check the wiring and connectors for any damage, and use an OBDII scanner to retrieve and clear the fault code.
4. Can I drive my Lincoln with the OBDII code B1937 related to the Air Bag Passenger Pressure Switch Circuit Open Fault?
- It is not recommended to drive the vehicle with a fault code related to the airbag system, as it may compromise the safety features of the vehicle in the event of a collision.
5. How can I repair the Air Bag Passenger Pressure Switch Circuit Open Fault in my Lincoln?
- Repairing the issue may involve replacing the faulty passenger pressure switch, repairing or replacing damaged wiring and connectors, or reprogramming the airbag control module to clear the fault code.
6. Are there any safety precautions I should take when working on the airbag system to address code B1937 in my Lincoln?
- It is crucial to disconnect the vehicle's battery and wait for at least 10 minutes before working on the airbag system to avoid accidental deployment and potential injury.
7. Is it possible to reset the OBDII code B1937 related to the Air Bag Passenger Pressure Switch Circuit Open Fault in my Lincoln without fixing the underlying issue?
- While clearing the fault code with an OBDII scanner may temporarily turn off the warning light, the code is likely to reappear if the root cause of the issue is not addressed.
8. Can a DIY enthusiast with some automotive knowledge repair the Air Bag Passenger Pressure Switch Circuit Open Fault in a Lincoln?
- Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to diagnose and repair simple issues related to the airbag system, but complex problems may require professional assistance.
9. What should I do if I cannot resolve the OBDII code B1937 Air Bag Passenger Pressure Switch Circuit Open Fault in my Lincoln?
- If you are unable to resolve the issue on your own, it is recommended to seek assistance from a qualified mechanic or an authorized Lincoln dealership for proper diagnosis and repair.
10. How can regular maintenance help prevent the occurrence of OBDII code B1937 in a Lincoln related to the Air Bag Passenger Pressure Switch Circuit Open Fault?
- Regularly inspecting and maintaining the airbag system, including checking for loose connections and damaged components, can help prevent issues like the B1937 fault code from occurring.
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