B1937 Mercury 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 Mercury 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 Mercury Description
What are the Possible Causes of the DTC B1937 Mercury?
- 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 Mercury?
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 Mercury 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 Mercury Code
1. What are the common symptoms of OBDII code B1937 in a Mercury related to the Air Bag Passenger Pressure Switch Circuit Open Fault?
- Common symptoms include the airbag warning light illuminating on the dashboard and potential issues with the passenger airbag system.
2. What causes the Air Bag Passenger Pressure Switch Circuit Open Fault (B1937) in a Mercury?
- This code can be triggered by a faulty passenger pressure switch, damaged wiring in the airbag system, or a poor connection in the circuit.
3. How serious is the B1937 OBDII code related to the Air Bag Passenger Pressure Switch Circuit Open Fault in a Mercury?
- This code is related to the passenger airbag system, so it is crucial to address it promptly to ensure the proper functioning of the airbag in case of an accident.
4. Can I continue driving my Mercury with the B1937 code indicating an Air Bag Passenger Pressure Switch Circuit Open Fault?
- It is not recommended to drive the vehicle with this code active, as it may compromise the safety of the passengers in the event of a collision.
5. How can I diagnose and repair the Air Bag Passenger Pressure Switch Circuit Open Fault (B1937) in my Mercury?
- Diagnosis typically involves inspecting the passenger pressure switch, checking the wiring for any damage, and testing the circuit for proper continuity. Repairs may involve replacing the pressure switch or repairing the wiring connections.
6. Is it possible to reset the B1937 OBDII code related to the Air Bag Passenger Pressure Switch Circuit Open Fault in a Mercury?
- Resetting the code without addressing the underlying issue will not solve the problem. It is essential to diagnose and repair the root cause of the fault before attempting to clear the code.
7. Are there any safety precautions I should take when working on the Air Bag Passenger Pressure Switch Circuit in my Mercury?
- It is crucial to disconnect the battery and wait for the airbag system to fully discharge before working on any components related to the airbag system to avoid accidental deployment.
8. Can a DIY enthusiast with basic automotive knowledge fix the B1937 code indicating an Air Bag Passenger Pressure Switch Circuit Open Fault in a Mercury?
- While some DIY enthusiasts may have the skills to diagnose and repair this issue, working on the airbag system requires precision and caution. It is recommended to seek professional help to ensure proper repair and safety.
9. How much does it typically cost to repair the Air Bag Passenger Pressure Switch Circuit Open Fault (B1937) in a Mercury at a dealership or repair shop?
- The cost of repair can vary depending on the root cause of the issue, but it may involve parts replacement, labor costs, and diagnostic fees. It is advisable to get a quote from a trusted dealership or repair shop.
10. Will fixing the Air Bag Passenger Pressure Switch Circuit Open Fault (B1937) in my Mercury require replacing the entire airbag system?
- In most cases, only specific components like the passenger pressure switch or damaged wiring need to be repaired or replaced, rather than the entire airbag system. A thorough diagnosis will determine the extent of the repair needed.
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