The OBD code B1A74 for Chrysler indicates a fault with Passive Entry Antenna 4 circuit.
Symptoms include the Engine Light ON.
Causes may include a faulty Passive Entry Antenna 4, open/shorted harness, poor electrical connection, or faulty modules.
This issue is not critical but should be addressed.
A possible fix is to inspect and repair any damaged components or wiring connections related to Passive Entry Antenna 4.
| 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 Chrysler b1a74 OBD Code
The specific fault code B1A74 in a Chrysler indicates an issue with the driver’s seatbelt buckle switch.
- Symptoms: Service Transmission Warning Light may illuminate.
- Issues with shifting gears may occur.
- Vehicle may go into limp mode.
- Transmission may not engage properly.
- Transmission may slip.
Causes of the Chrysler b1a74 OBD Code
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Possible triggers for Chrysler fault code B1A74 include faulty steering angle sensor or wiring issues.
- B1A74 can be caused by a faulty Passive Entry Antenna 4.
- A Passive Entry Antenna 4 harness that is open or shorted.
- A Passive Entry Antenna 4 circuit with a poor electrical connection.
- A faulty Passive Entry Module (PEM).
- A faulty Radio Frequency Hub (RF Hub) Module.
Fixing Chrysler Error Code b1a74 Step By Step
To resolve Chrysler fault code B1A74, inspect and repair the driver’s seatbelt buckle switch circuit.
- To fix the Chrysler OBDII code B1A74, start by reviewing the possible causes mentioned above.
- Visually examine the wiring harness and connectors related to the occupant classification module.
- Check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
- If no visible issues are found, consider resetting the module using a diagnostic scan tool.
- If the problem persists after the reset, it may be necessary to replace the occupant classification module with a new one to resolve the B1A74 fault code.
Cost Of Fixing Chrysler b1a74 Fault Code
The repair for Chrysler fault code B1A74 may involve replacing the driver’s seatbelt retractor assembly.
The cost to diagnose and fix the Chrysler OBD code B1A74 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. The final cost may vary based on shop rates and the complexity of the repair.
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Details of the Chrysler b1a74 OBD Code
The Chrysler fault code B1A74 relates to the Driver Seat Belt Pretensioner 1 Circuit.
Code B1A74 in a Chrysler vehicle refers to the Left Headlamp Horizontal Aim Control Circuit High fault.
This code is triggered by the Body Control Module (BCM) when it detects a high voltage condition in the left headlamp horizontal aim control circuit.
The system involved is the headlamp leveling system, which adjusts the horizontal aim of the headlamp based on vehicle load to prevent blinding oncoming drivers.
Mechanic’s Tech Notes
This code indicates a fault with the driver’s seatbelt buckle switch circuit in a Chrysler vehicle.
To diagnose and fix OBDII code Chrysler B1A74, start by checking the Transmission Control Module (TCM) power and ground using a multimeter.
Verify TCM communication over the Controller Area Network (CAN) network with a scan tool.
If the TCM does not respond, reprogramming or reflashing may be necessary.
Visually inspect the wiring harness and connectors for any damage, focusing on broken, bent, or corroded pins.
Ensure all connections are secure.
If the issue persists, consider consulting a professional for further diagnosis and repair.
FAQ
OBD code B1A74 in a Chrysler indicates an issue with Passive Entry Antenna 4. Check wiring harness, connectors, and components for faults to resolve.
Diagnose OBD code B1A74 in Chrysler for Engine Light ON. Check Passive Entry Antenna 4, harness, PEM, RF Hub Module. Inspect wiring, connectors for damage, corrosion.
To fix OBD code B1A74 in a Chrysler vehicle, check Passive Entry Antenna 4 and related components for faults. Inspect wiring harness, connectors, and components for damage or corrosion.
Wrap Up
If your Chrysler is displaying OBDII code b1a74, you may experience issues with the driver’s seatbelt pretensioner circuit.
This could be caused by a faulty seatbelt pretensioner, damaged wiring harness, or poor electrical connection.
To address Chrysler OBDII code b1a74, check the wiring harness for any visible damage, ensure connectors are securely attached, and test the seatbelt pretensioner for proper functionality.
Replace any damaged components and repair any wiring issues to resolve the problem effectively.
