The OBD code B374A indicates a fault with the Mode Actuator in the Heating, Ventilation, and Air Conditioning (HVAC) system.
Symptoms include the Engine Light being ON.
This issue is commonly caused by a faulty Mode Actuator or related wiring issues.
It is important to visually inspect the wiring harness and connectors for any damage and ensure proper connection.
| 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 b374a OBD Code
The vehicle displays a warning light indicating a fault with code B374A.
- Symptoms: Service Engine Soon Warning Light ON.
- Engine may stall unexpectedly.
- Rough idle may be noticeable.
- Engine performance may feel sluggish.
- Vehicle may have difficulty starting.
Causes of the b374a OBD Code
Possible triggers for fault code B374A include faulty wiring or a malfunctioning sensor.
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- B374A can be caused by a faulty Mode Actuator.
- A Mode Actuator harness that is open or shorted.
- A Mode Actuator circuit with poor electrical connection.
- A faulty Heating, Ventilation, and Air Conditioning (HVAC) Control Module.
Fixing Error Code b374a Step By Step
To address fault code B374A, inspect and repair the steering angle sensor circuit as needed.
- To fix OBDII code B374A, start by reviewing the possible causes related to this code.
- Visually inspect the wiring harness and connectors associated with the affected system.
- Check for any damaged components and ensure the connector pins are not broken, bent, pushed out, or corroded.
- If no issues are found during the visual inspection, proceed to perform a thorough check of the sensor or module linked to the code.
- Test the sensor’s functionality or the module’s operation as per the manufacturer’s specifications.
- Replace the sensor or module if necessary.
- Finally, clear the fault code using a diagnostic scan tool to reset the system and verify that the issue has been resolved.
Cost Of Fixing b374a Fault Code
Diagnosing and repairing fault code B374A may involve inspecting and potentially replacing the steering angle sensor.
The cost to diagnose and fix OBD code B374A depends on the estimated 1. 0hour repair time.
Labor rates usually range from $75 to $150 per hour, so the total cost could be between $75 and $150. Factors like shop rates and the complexity of the repair can influence the final cost.
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Details of the b374a OBD Code
Fault code B374A relates to a malfunction in the driver’s seat belt buckle switch circuit.
OBD code B374A means Seat Belt Buckle Switch Left Front Circuit Short to Battery.
This code is triggered by the Body Control Module (BCM) when it detects a short to battery in the circuit of the left front seat belt buckle switch.
The signal or system involved is related to the seat belt buckle switch in the left front seat of the vehicle.
Mechanic’s Tech Notes
Code B374A indicates a fault with the driver’s seatbelt buckle switch circuit.
OBDII code B374A indicates a problem with the transmission control module (TCM) power supply.
To diagnose, use a multimeter to check TCM power and ground connections for proper voltage levels.
Utilize a scan tool to confirm TCM communication over the Controller Area Network (CAN) bus.
Visually inspect wiring harnesses and connectors for any damage, and ensure connector pins are not broken, bent, or corroded.
If necessary, consider reprogramming or reflashing the TCM.
FAQ
OBD code B374A indicates a faulty Mode Actuator in the HVAC system. Check wiring harness, connectors, and HVAC Control Module for issues.
Common symptoms of OBD code B374A include Engine Light ON, caused by a faulty Mode Actuator or issues with the HVAC Control Module. Inspect wiring and connectors for damage.
Diagnose and repair OBD code B374A by checking for a faulty Mode Actuator, open/shorted harness, poor electrical connection, or HVAC Control Module. Inspect wiring and connectors for damage.
Wrap Up
If your vehicle displays OBD code b374a, you may experience issues with the transmission system such as harsh shifting, slipping gears, or even transmission failure.
This code typically indicates a problem with the transmission fluid pressure sensor or its circuit, possibly due to sensor malfunction, wiring faults, or connector issues.
To address OBD code b374a, start by inspecting the wiring harness and connectors related to the transmission fluid pressure sensor.
Check for any signs of damage, corrosion, or loose connections.
If no visible issues are found, consider testing the sensor itself for proper operation or replacing it if necessary
