OBD code B1747 indicates an issue with the Mirror Passenger Horizontal Switch in the Body Control Module (BCM) system.
Symptoms include the Engine Light being ON.
The cause could be a faulty switch, open/shorted harness, or poor electrical connection.
This is a moderate issue.
To fix, inspect the switch, wiring harness, and connectors for any damage or corrosion.
Repair Importance Level | 10.0 (Out of 10) |
Estimated Repair Time | Approximately 1.0 hour |
Repair Difficulty Level | 10.0 (Out of 10) |
I know how frustrating it is to see that warning light pop up again and again. You don’t need to spend money at the mechanic just to clear it. With this pocket-friendly automatic car scanner, you can do it yourself in seconds and and avoid the time and inconvenience of driving to a mechanic. Just plug it in, connect to your Android or iOS phone, and instantly see live data. Understand the fault code, clear it right away, and decide if it’s something urgent or if you’re good to drive. It even monitors your car and sends notifications to your phone, so you’re always in control. Simple, fast, and stress-free—today’s offer price!
Symptoms of the b1747 OBD Code
The vehicle displays an airbag warning light on the dashboard with fault code B1747 stored.
- Symptoms: Airbag warning light illuminated.
- Chime sound when starting the vehicle.
- Airbag system may not deploy in a collision.
Causes of the b1747 OBD Code
Do you know you can clear most fault codes—but some could mean serious danger? Don’t take chances with your safety or your family’s safety. This budget-friendly car scanner makes it easy to clear fault codes in seconds while showing you exactly what’s wrong. Plug it in, connect to your Android or iOS phone, and instantly check live data. You’ll know if it’s a minor issue you can clear or something serious that needs attention—so you can drive safely and stress-free. (Today’s Deal)
Code B1747 typically indicates a problem with the driver’s seatbelt pretensioner circuit.
- B1747 can be caused by a faulty Mirror Passenger Horizontal Switch.
- A Mirror Passenger Horizontal Switch harness that is open or shorted.
- A Mirror Passenger Horizontal Switch circuit with poor electrical connection.
- A faulty Body Control Module (BCM).
Fixing Error Code b1747 Step By Step
To resolve fault code B1747, inspect and repair the driver’s seatbelt pretensioner circuit as needed.
- To fix OBDII code B1747, first, review the ‘Possible Causes’ mentioned above and visually examine the corresponding wiring harness and connectors.
- Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
- Next, check the seat weight sensor for any faults or malfunctions.
- If the sensor is faulty, replace it with a new one.
- Finally, clear the fault codes using a scan tool and perform a test drive to ensure the issue has been resolved.
Cost Of Fixing b1747 Fault Code
Diagnosing and repairing fault code B1747 typically involves inspecting and possibly replacing the driver’s seatbelt pretensioner.
The cost to diagnose and fix OBD code B1747 typically ranges from $75 to $150, based on an estimated repair time of 1. 0 hour.
Factors like shop rates and complexity of the repair can influence the final cost.
Details of the b1747 OBD Code
B1747 code indicates a driver’s airbag circuit short to ground.
OBD code B1747 means the driver’s seatbelt pretensioner circuit has low voltage.
This code is triggered by the Restraints Control Module (RCM) when it detects a voltage below the threshold in the driver’s seatbelt pretensioner circuit.
The system involved is the driver’s seatbelt pretensioner circuit, which is responsible for tightening the seatbelt in the event of a collision to secure the occupant in place.
Mechanic’s Tech Notes
Code B1747 indicates a driver’s airbag circuit resistance is too high.
OBDII code B1747 indicates a malfunction in the TCM power supply circuit.
To diagnose, use a voltmeter to check TCM power and ground connections for proper voltage levels.
Utilize a scan tool to confirm TCM communication over the CAN network.
Visually inspect wiring harnesses and connectors for any damage, and ensure connector pins are not broken, bent, or corroded.
If all checks out, consider reprogramming the TCM.
FAQ
OBD code B1747 indicates an issue with the Mirror Passenger Horizontal Switch. Check switch, wiring, and connectors for faults. Inspect BCM for problems.
Common symptoms of OBD code B1747 include Engine Light ON, caused by issues like faulty mirror passenger horizontal switch or poor electrical connections. Inspect and repair related components and wiring.
Diagnose OBD code B1747 by checking Mirror Passenger Horizontal Switch and BCM. Inspect wiring for damage or poor connections. Repair as needed.

Wrap Up
If your airbag light is on and you see OBDII code b1747, it may indicate a problem with the driver’s airbag circuit.
This could be caused by a faulty driver’s airbag module, damaged wiring, or a poor connection at the airbag module or clock spring.
To address OBDII code b1747, check the wiring harness and connectors leading to the driver’s airbag module.
Inspect for any signs of damage, corrosion, or loose connections.
Test the driver’s airbag module and clock spring for proper functionality and replace any faulty components as needed.