B1424 – OBD-II DTC

OBD-II DTC B1424 – Power Window RR Motor Circuit Short To Battery

DTC B1424 meaning

DTC B1424 refers to a diagnostic trouble code indicating a short circuit in the power window rear motor circuit to the battery. This code is generated when the vehicle’s onboard diagnostic system detects an abnormal voltage level in the rear power window motor circuit, suggesting that the circuit is directly connected to the battery, which can lead to potential motor damage or malfunction.

DTC B1424 symptoms

Common symptoms associated with DTC B1424 may include:

• Rear power window not functioning
• Power window motor running continuously
• Blown fuses related to the power window system
• Intermittent operation of the rear power window
• Warning lights on the dashboard

DTC B1424 causes

Several factors can lead to the occurrence of DTC B1424, including:

• Wiring issues such as frayed or damaged wires
• Faulty power window motor
• Short circuit in the power window switch
• Corrosion or poor connections in the electrical system
• Defective body control module (BCM)

DTC B1424 seriousness

The seriousness of DTC B1424 can vary, but it is generally considered a moderate issue. While it may not immediately affect the vehicle’s drivability, it can lead to further electrical problems or damage to the power window motor if not addressed promptly. Ignoring this code may result in additional repair costs down the line.

How to diagnose DTC B1424

To diagnose DTC B1424, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the DTC.
2. Inspect the wiring and connectors related to the rear power window motor for any visible damage or corrosion.
3. Check the power window switch for proper operation.
4. Test the voltage at the power window motor to ensure it is within the manufacturer’s specifications.
5. Perform a continuity test on the wiring harness to identify any shorts to the battery.
6. Examine the body control module for any faults or error codes.

How to fix DTC B1424 step-by-step instructions

To fix DTC B1424, follow these step-by-step instructions:

1. Disconnect the vehicle’s battery to ensure safety while working on the electrical system.
2. Inspect and repair any damaged wiring or connectors found during diagnosis.
3. Replace the power window motor if it is determined to be faulty.
4. Test the power window switch and replace it if necessary.
5. Reconnect the battery and clear the DTC using an OBD-II scanner.
6. Test the rear power window operation to ensure it functions correctly.

How to erase DTC B1424

To erase DTC B1424, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the ignition without starting the engine.
3. Navigate to the DTC menu on the scanner and select the option to clear or erase codes.
4. Confirm the action and wait for the scanner to complete the process.
5. Disconnect the scanner and start the vehicle to ensure the code does not reappear.

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