OBD code B1440 indicates an issue with the ignition switch circuit.
This affects the Body Control Module (BCM).
Symptoms include the Engine Light being ON.
The cause could be a faulty ignition switch, open/shorted harness, or poor electrical connection.
It’s a moderate issue.
To fix, inspect wiring and connectors for damage, and check connector pins for any issues.
| Repair Importance Level | 10.0 (Out of 10) |
| Estimated Repair Time | Approximately 1.0 hour |
| Repair Difficulty Level | 10.0 (Out of 10) |
Symptoms of the b1440 OBD Code
The vehicle displays an airbag warning light on the dashboard.
- Symptoms: Service Engine Soon Warning Light ON.
- Possible loss of communication with the body control module.
- Difficulty starting the vehicle.
- Horn may not work properly.
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Causes of the b1440 OBD Code
Possible reasons for fault code B1440 include issues with the airbag system or seat belt pretensioner.
- B1440 can be caused by a faulty Ignition Switch.
- An open or shorted Ignition Switch harness.
- A poor electrical connection in the Ignition Switch circuit.
- A faulty Body Control Module (BCM).
Fixing Error Code b1440 Step By Step
To address fault code B1440, inspect and repair the driver’s side airbag module circuit.
- To fix OBDII code B1440, 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.
- Check the wiring leading to the airbag control module for any issues.
- Inspect the airbag control module for proper connection and functionality.
- Reset the airbag control module using a professional scan tool.
- If the issue persists, consider replacing the airbag control module with a new one.
Cost Of Fixing b1440 Fault Code
The repair for fault code B1440 may involve replacing the passenger airbag module.
The cost to diagnose and fix OBD code B1440 depends on the estimated 1. 0hour repair time.
Labor rates usually range from $75 to $150 per hour, so the general cost could be between $75 and $150. Actual cost may vary based on shop rates and the complexity of the repair.
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Details of the b1440 OBD Code
B1440 code indicates a passenger airbag deactivation switch fault in the vehicle.
OBD code B1440 means the driver’s door ajar circuit is malfunctioning.
This code is triggered by the body control module (BCM) when it detects a fault in the circuit that monitors the status of the driver’s door (open or closed).
The BCM sends a signal to the instrument cluster to illuminate the door ajar warning light on the dashboard when this fault is detected.
Mechanic’s Tech Notes
Code B1440 indicates a passenger airbag deactivation indicator circuit malfunction.
OBDII code B1440 indicates an issue with the body control module (BCM) communication circuit.
To diagnose, use a voltmeter to check power and ground to the BCM.
Utilize a scan tool to confirm BCM communication over the Controller Area Network (CAN) network.
Inspect wiring harnesses and connectors for damage, and check for broken, bent, or corroded pins.
Reflashing the BCM may be necessary.
FAQ
OBD code B1440 indicates an issue with the ignition switch circuit. Check for faulty ignition switch, open/shorted harness, poor connection, or faulty BCM. Inspect wiring and connectors for damage.
Common symptoms for code B1440 include Engine Light ON, caused by faulty Ignition Switch, harness issues, or faulty Body Control Module. Inspect wiring and connectors for damage.
Diagnose OBD code B1440 by checking for a faulty ignition switch, open/shorted harness, poor electrical connection, or faulty BCM. Inspect wiring harness and connectors for damage.
Wrap Up
If your airbag warning light is on and you see OBDII code b1440, it may indicate a fault in the passenger’s airbag disable switch circuit.
This could be caused by a defective passenger’s airbag disable switch, damaged wiring, or poor connections in the circuit.
To address OBDII code b1440, check the passenger’s airbag disable switch for proper operation, inspect the wiring for any signs of damage, and ensure all connectors are securely attached.
Replace the passenger’s airbag disable switch if necessary and repair any wiring issues found.
