B1937 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 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 Description
What are the Possible Causes of the DTC B1937?
- 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?
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 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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Get the B1937 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- B1937 Ford — Air Bag Passenger Pressure Switch Circuit Open Fault
- B1937 Lincoln — Air Bag Passenger Pressure Switch Circuit Open Fault
- B1937 Mercury — Air Bag Passenger Pressure Switch Circuit Open Fault
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 Code
1. What are common symptoms of OBDII code B1937 (Air Bag Passenger Pressure Switch Circuit Open Fault)?
- Common symptoms include the airbag warning light staying illuminated on the dashboard and possible non-deployment of the passenger airbag during a collision.
2. What can cause the OBDII code B1937 to appear?
- The code B1937 may be triggered by a faulty passenger pressure switch, damaged wiring in the circuit, or a loose connection.
3. How serious is the Air Bag Passenger Pressure Switch Circuit Open Fault (B1937) code?
- This code relates to the passenger airbag system, so it is crucial to address it promptly to ensure the airbag functions correctly in case of an accident.
4. Can I continue driving with the B1937 code present?
- It is not recommended to continue driving with the B1937 code active, as it indicates a potential issue with the passenger airbag system's functionality.
5. How can I diagnose and repair the Air Bag Passenger Pressure Switch Circuit Open Fault (B1937) code?
- Diagnosis involves checking the passenger pressure switch, inspecting the circuit for any damage, and testing the wiring and connections. Repair may involve replacing the faulty switch, repairing damaged wiring, or securing loose connections.
6. Is it possible to clear the B1937 code without fixing the underlying issue?
- Clearing the code without addressing the underlying problem will not resolve the issue, and the code is likely to reappear once the system detects the fault again.
7. Can a DIY enthusiast fix the B1937 code at home?
- DIY enthusiasts with the necessary tools and knowledge of airbag systems may be able to diagnose and repair the B1937 code. However, working with airbag systems can be complex and potentially hazardous, so caution is advised.
8. How much does it typically cost to repair the Air Bag Passenger Pressure Switch Circuit Open Fault (B1937) code?
- The cost of repairing the B1937 code can vary depending on the underlying issue, the extent of the damage, and whether professional assistance is required. Costs may include parts and labor fees.
9. Are there any preventive measures to avoid triggering the B1937 code?
- Regular maintenance checks, avoiding impacts to the passenger airbag area, and handling the vehicle with care can help prevent issues that may trigger the B1937 code.
10. How long does it usually take to repair the B1937 code?
- The repair time for the B1937 code can vary depending on the specific issue and the expertise of the technician. Simple repairs may take a few hours, while more complex issues could require more time.
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