What is the B0050 Fault Code?
The B0050 fault code, applicable to all car manufacturers, means “Driver Seatbelt Sensor (Subfault)“.
Background Information: The seatbelt sensor checks whether the driver or passenger has fastened their seatbelt based on the principle of a pressure sensor installed in the seat cushion.
Symptoms of the B0050 Fault Code
Signs of error B0050 may include:
- Airbag light illuminated on the dashboard
- SRS system malfunction warning
- Driver’s seatbelt not fastened
- Failure to pass inspection due to an active error
Main Causes of Error Code B0050
- Driver seatbelt sensor malfunction
- Damaged wiring or connector in the sensor circuit
- Short circuit in the sensor circuit
- Open circuit in the sensor
B0050 Fault Code in Different Vehicles
B0050 in Ford Fusion: In the Ford Fusion, error B0050 is usually caused by a faulty driver’s seatbelt sensor. It is recommended to check the wiring and connectors under the driver’s seat.
B0050 in Dodge Ram: In the Dodge Ram, code B0050 may indicate an open circuit in the seatbelt sensor circuit. It is necessary to check the integrity of the wiring and connectors.
B0050 Jeep Cherokee: In the Jeep Cherokee, error B0050 may be due to a short circuit in the seatbelt sensor circuit. It is recommended to diagnose the circuit with a multimeter.
B0050 in Chevrolet Equinox: In the Chevrolet Equinox, code B0050 may appear due to a faulty seatbelt sensor or damaged wiring. The faulty component must be checked and replaced if necessary.
B0050 in Honda RDX: In the Honda RDX, error B0050 can be attributed to a faulty seatbelt buckle. It is recommended to check the operation of the buckle and replace it if necessary.
How to Diagnose the B0050 Fault Code?
- Connect an OBD2 diagnostic scanner to the vehicle’s OBD-II connector.
- Read the error codes and write them down.
- Check the wiring and connectors of the driver’s seatbelt sensor for damage or corrosion.
- Test the sensor’s resistance with a multimeter.
- If necessary, replace the faulty sensor or repair the damaged wiring.
Possible Causes and Diagnostic Methods
| Possible Cause | How to Check？ |
|---|---|
| Seatbelt sensor malfunction | Measure the sensor’s resistance with a multimeter |
| Damaged wiring or connector | Check wiring and connectors for damage |
| Short circuit | Check the circuit for short circuits |
| Broken chain | Check the circuit’s continuity with a multimeter |
Tools needed: OBD2 scanner, multimeter, trim removal tool kit, replacement connector or wiring (if necessary)
How to fix error code B0050?
Simple repair methods
- Check and replace the fuse related to the SRS system if necessary
- Clean corrosion from the seatbelt sensor connector
- After fixing the problem, reset the error code using a diagnostic scanner
In-depth diagnostic and repair solutions
- Replace the faulty driver’s seatbelt sensor
- Repair or replace damaged wiring in the sensor circuit
- Check and replace the SRS system control module if necessary
Troubleshooting by symptoms
| Symptom | Possible solution |
|---|---|
| Airbag light is on | Check and replace the seatbelt sensor |
| SRS fault warning | Check the wiring and connectors in the sensor circuit |
| Seatbelt won’t lock | Replace the seatbelt locking mechanism |
B0050 Error FAQ
Can you drive with a B0050 fault code?
It is not recommended, as the error indicates a malfunction in the passive safety system (including airbags), which increases the risk of injury in an accident.
What does the B0050 fault code mean?
It means there is a fault in the driver’s seatbelt sensor circuit, such as an open circuit, short circuit, or damaged connector.
Is it possible to reset error B0050 without fixing it?
It can be reset with a scanner or by disconnecting the battery, but if the problem persists, the error will reappear quickly.
How much does it cost to fix error B0050?
The cost depends on the cause: a simple sensor replacement may be inexpensive, but replacing the SRS module or repairing wiring will be more costly.
Can I fix error B0050 myself?
Yes, if you know how to use a multimeter and connectors, you can check and replace the sensor or wiring yourself.
Related OBD2 errors for B0050
B0051 – First Row Center Seatbelt Sensor (Subfault)
B0052 – Passenger Seatbelt Sensor (Subfault)
B0053 – Second Row Left Seatbelt Sensor (Subfault)
Important! Ignoring this error could lead to airbag malfunction, increasing the risk of injury in an accident. Do not delay repairing the SRS system, as this will affect airbag performance and increase the risk of injury in an accident.