B1414 – OBD-II DTC

OBD-II DTC B1414 – Power Window LR Motor Circuit Failure

DTC B1414 meaning

DTC B1414 refers to a diagnostic trouble code indicating a failure in the power window motor circuit for the left rear window. This code is part of the On-Board Diagnostics II (OBD-II) system, which monitors various vehicle components and systems for faults. When the system detects an issue with the left rear power window motor circuit, it triggers this specific code to alert the technician of the problem.

DTC B1414 symptoms

Common symptoms associated with DTC B1414 may include:

• The left rear power window not functioning.
• Intermittent operation of the left rear power window.
• Other power windows functioning normally.
• Possible warning lights on the dashboard related to electrical issues.

DTC B1414 causes

Several factors can lead to the triggering of DTC B1414, including:

• A faulty left rear power window motor.
• Damaged wiring or connectors in the power window circuit.
• A malfunctioning power window switch.
• Issues with the vehicle’s body control module (BCM).
• Blown fuses related to the power window system.

DTC B1414 seriousness

The seriousness of DTC B1414 can vary based on the specific circumstances. While it may not pose an immediate safety risk, it can lead to inconvenience due to the inability to operate the left rear window. Additionally, if left unaddressed, it may indicate underlying electrical issues that could affect other systems in the vehicle.

How to diagnose DTC B1414

To diagnose DTC B1414, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the B1414 code.
2. Inspect the left rear power window motor and wiring for visible damage.
3. Check the power window switch for proper operation.
4. Test the voltage and ground at the power window motor connector.
5. Examine the vehicle’s body control module for any faults.
6. Inspect and test related fuses for continuity.

How to fix DTC B1414 step-by-step instructions

To fix DTC B1414, follow these step-by-step instructions:

1. Confirm the DTC B1414 using an OBD-II scanner.
2. Visually inspect the left rear power window motor and wiring for any signs of damage or corrosion.
3. If the motor is faulty, replace it with a new or refurbished unit.
4. Repair or replace any damaged wiring or connectors found during inspection.
5. Test the power window switch and replace it if it is not functioning correctly.
6. Check the body control module for faults and replace it if necessary.
7. Replace any blown fuses related to the power window system.
8. Clear the DTC using an OBD-II scanner and test the power window operation.

How to erase DTC B1414

To erase DTC B1414, 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 scanner’s menu and select the option to clear or erase trouble 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.

Recommended tools for OBD-II diagnostics

Explore our expert picks: The Best OBD2 Scanners for 2025

Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.