B1237 – OBD-II DTC

OBD-II DTC B1237 – Window Feedback Out of Range

DTC B1237 meaning

DTC B1237 refers to a diagnostic trouble code indicating that the window feedback signal is out of range. This code is typically associated with power windows and their control systems. The vehicle’s onboard diagnostic system detects that the feedback from the window motor or position sensor does not match the expected values, which can lead to improper window operation.

DTC B1237 symptoms

Common symptoms associated with DTC B1237 may include:

• Power windows that do not operate correctly.
• Windows that may not fully open or close.
• Intermittent window operation.
• Window control switches that feel unresponsive.
• Warning lights on the dashboard related to window functions.

DTC B1237 causes

Several factors can lead to the occurrence of DTC B1237, including:

• Faulty window motor or actuator.
• Defective window position sensor.
• Wiring issues, such as shorts or open circuits.
• Corroded or loose electrical connections.
• Faulty body control module (BCM) or power window switch.

DTC B1237 seriousness

The seriousness of DTC B1237 can vary. While it may not pose an immediate safety risk, it can lead to inconvenience and potential security issues if windows cannot be closed properly. It is advisable to address this code promptly to ensure proper window functionality and prevent further electrical issues.

How to diagnose DTC B1237

To diagnose DTC B1237, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the code.
2. Inspect the window motor and position sensor for visible damage.
3. Check the wiring and connectors for signs of wear or corrosion.
4. Test the window motor and position sensor using a multimeter.
5. Examine the body control module and power window switch for faults.
6. Clear the code and perform a window operation test to see if the code returns.

How to fix DTC B1237 step-by-step instructions

To fix DTC B1237, follow these steps:

1. Identify and replace any faulty window motor or actuator.
2. Replace a defective window position sensor if necessary.
3. Repair or replace damaged wiring and connectors.
4. Ensure all electrical connections are clean and secure.
5. If needed, replace the body control module or power window switch.
6. After repairs, clear the DTC and test the window operation.

How to erase DTC B1237

To erase DTC B1237, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn the ignition key to the “On” position without starting the engine.
3. Access the diagnostic menu on the scanner.
4. Select the option to clear or erase trouble codes.
5. Confirm the action and wait for the scanner to complete the process.
6. Disconnect the scanner and start the vehicle to check for any reoccurring codes.

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