B1423 – OBD-II DTC

OBD-II DTC B1423 – Power Window RR Motor Circuit Open

DTC B1423 meaning

DTC B1423 refers to a diagnostic trouble code indicating an open circuit in the rear right power window motor circuit. This code is generated when the vehicle’s onboard diagnostic system detects that the power window motor for the rear right window is not receiving the expected voltage or signal, suggesting a potential issue in the wiring or the motor itself.

DTC B1423 symptoms

Common symptoms associated with DTC B1423 may include:

• The rear right power window does not operate.
• Intermittent operation of the rear right power window.
• Other power windows may function normally.
• Possible warning lights on the dashboard related to electrical issues.

DTC B1423 causes

Several factors can lead to the occurrence of DTC B1423, including:

• Faulty rear right power window motor.
• Damaged or frayed wiring in the power window circuit.
• Corroded or loose electrical connectors.
• Issues with the power window switch.
• Faulty body control module (BCM) or related control systems.

DTC B1423 seriousness

The seriousness of DTC B1423 can vary. While it may not affect the vehicle’s overall drivability, it can lead to inconvenience due to the inability to operate the rear right window. Additionally, if left unaddressed, it may indicate underlying electrical issues that could affect other systems in the vehicle.

How to diagnose DTC B1423

To diagnose DTC B1423, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the DTC.
2. Inspect the rear right power window motor and wiring for visible damage.
3. Check the electrical connectors for corrosion or looseness.
4. Test the power window switch for proper operation.
5. Measure voltage at the power window motor while operating the switch.
6. Consult wiring diagrams to trace the circuit and identify any breaks.

How to fix DTC B1423 step-by-step instructions

To fix DTC B1423, follow these steps:

1. Disconnect the vehicle’s battery to ensure safety.
2. Inspect and repair any damaged wiring in the rear right power window circuit.
3. Replace any corroded or loose connectors.
4. Test and, if necessary, replace the rear right power window motor.
5. Check and replace the power window switch if it is faulty.
6. Reconnect the battery and clear the DTC using an OBD-II scanner.
7. Test the rear right power window to ensure it operates correctly.

How to erase DTC B1423

To erase DTC B1423, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the vehicle’s ignition without starting the engine.
3. Navigate to the DTC 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 ensure the code does not return.