The B1372 code indicates a problem with the Remote Function Actuator (RFA) Module in a vehicle. This module is responsible for controlling components like door locks and the liftgate. When the RFA module fails to receive a response from the left rear door unlock sensor, this code is triggered.
Symptoms of this issue may include difficulty unlocking the left rear door or a malfunctioning door lock.
Possible causes of the B1372 code include a faulty left rear door handle, an open or shorted harness, or a poor electrical connection.
To fix this issue, it is recommended to consult a professional for an accurate diagnosis and resolution. They will be able to determine the exact cause of the problem and perform the necessary repairs or replacements.
What does it mean
The code B1372 indicates a lack of response from the left rear door unlock sensor, affecting the functionality of the door. The Remote Function Actuator (RFA) Module doesn't receive a response, preventing the door from unlocking.
Prompt attention is necessary to restore normal functionality. Check with the vehicle manufacturer or a professional technician for further information or recalls related to this code.
what are the symptoms
The B1372 code can cause the engine light to turn on and may have other symptoms as well. The main symptom is the illuminated engine light on the dashboard. There could also be additional symptoms depending on the specific vehicle.
To troubleshoot the issue, it is recommended to follow the diagnostic procedures provided by the vehicle manufacturer. This may involve checking the wiring, inspecting components, and ensuring there are no electrical problems.
A faulty Remote Function Actuator (RFA) Module can also cause issues with door locks and liftgate operation, leading to the B1372 code being triggered.
What are the causes
Possible causes of the B1372 code include:
- A faulty left rear door handle
- A problem with the wiring in the left rear door handle
- A poor electrical connection in the left rear door handle circuit
- A faulty Remote Function Actuator (RFA) Module
When diagnosing the B1372 code, it is important to consider these potential causes.
Common mistakes in diagnosing the B1372 code include:
- Not considering the left rear door handle as a possible source of the issue
- Not thoroughly inspecting the wiring harness and connectors related to the left rear door handle
- Neglecting to carefully examine for any damaged components or broken, bent, pushed out, or corroded connector pins
Neglecting these steps can result in an inaccurate diagnosis and ineffective repairs. Therefore, it is essential to follow the proper diagnostic procedures and avoid these common mistakes in order to successfully address the B1372 code.
What Tools are Needed to diagnose
To diagnose the B1372 code effectively, a professional technician will need specific tools. These tools are necessary to accurately identify and resolve issues with the Remote Function Actuator (RFA) Module. Here are the tools needed for diagnosing DTC B1372:
- Scan Tool: A scan tool is essential for retrieving the B1372 code and accessing the RFA Module's data.
- Multimeter: A multimeter is used to test electrical connections and check for open or shorted circuits.
- Wiring Diagrams: Detailed wiring diagrams are necessary to trace and identify any issues with the Left Rear Door Handle circuit.
- Inspection Light: An inspection light helps visually inspect the wiring harness and connectors for damage or loose connections.
These tools enable the technician to perform a comprehensive diagnosis and address common issues with the Remote Function Actuator (RFA) Module, ensuring an accurate and efficient repair process.
How to fix Step by Step
Step 1: Check the left rear door handle for faults.
Step 2: Inspect the wiring harness and connectors for any signs of damage.
Step 3: Look for broken, bent, pushed out, or corroded connector pins.
Step 4: Verify the functionality of the Remote Function Actuator (RFA) module.
Step 5: Ensure the RFA module can interpret radio frequency signals.
Step 6: Use a diagnostic tool, such as a scan tool, to retrieve and analyze trouble codes.
Step 7: Utilize a multimeter to perform electrical tests.
Step 8: By following these steps and utilizing the appropriate diagnostic tools, technicians can effectively identify and fix the underlying issues causing the B1372 code.
What are the Common Diagnosis Mistakes
What are the common mistakes that are often made when diagnosing the B1372 code?
- Here are some common misdiagnoses:
- Mistakenly identifying the left rear door handle as the main issue without conducting proper testing and inspection.
- Failing to consider the possibility of an open or shorted left rear door handle harness.
Here are some tips to prevent DTC B1372:
- Conduct a thorough visual inspection of the related wiring harness and connectors to look for any signs of damage.
- Make sure that all connector pins are not broken, bent, pushed out, or corroded.
- Test the functionality of the left rear door unlock sensor before replacing any components.
- Follow the diagnostic procedures provided in the service manual to accurately determine the underlying cause of the code.
What is the Repair Cost
The repair cost for the B1372 code varies depending on location, make, model, and engine type. It is recommended to consult with a professional for accurate diagnosis and repair to avoid potential risks.
Attempting to fix this code without proper knowledge and tools may cause further damage to the vehicle.
Can I drive safely with this code?
Driving safely with the B1372 code is not recommended. The code indicates a problem with the Remote Function Actuator (RFA) Module, affecting the vehicle's locking system. Ignoring this code could lead to issues with unlocking the left rear door.
It is crucial to address this promptly to ensure proper functioning. Consult a professional technician to diagnose and repair the problem. Disabling the RFA module can result in the loss of important functions like remote locking and unlocking.
Conclusion
In conclusion, the B1372 code indicates a potential issue with the Remote Function Actuator (RFA) Module in a vehicle.
This code may be accompanied by the illumination of the engine light or a service engine soon warning light.
It is important to diagnose and fix this issue promptly to ensure the proper functioning of components controlled by the RFA module.
Consulting a professional is advised for an accurate estimate of the cost to resolve the issue.