B1668 – OBD-II DTC

OBD-II DTC B1668 – Mirror Driver Right/Left Motor Stalled

DTC B1668 meaning

DTC B1668 refers to a diagnostic trouble code indicating that the right or left mirror driver motor has stalled. This code is part of the On-Board Diagnostics II (OBD-II) system, which monitors various vehicle components for faults. When the system detects that the mirror motor is not functioning as expected, it triggers this code to alert the technician of a potential issue.

DTC B1668 symptoms

Common symptoms associated with DTC B1668 may include:

• Inability to adjust the side mirror using the control switch.
• Mirror position remains fixed and does not respond to commands.
• Unusual noises coming from the mirror assembly when attempting to adjust.
• Warning lights illuminated on the dashboard related to the mirror system.

DTC B1668 causes

Several factors can lead to the occurrence of DTC B1668, including:

• Faulty mirror motor or actuator.
• Wiring issues, such as shorts or open circuits in the mirror control circuit.
• Defective control switch that fails to send signals to the mirror motor.
• Mechanical obstruction preventing the mirror from moving.
• Corrosion or damage to electrical connectors related to the mirror system.

DTC B1668 seriousness

The seriousness of DTC B1668 can vary based on the specific situation. While it may not pose an immediate safety risk, it can affect the driver’s ability to adjust mirrors for optimal visibility, which is crucial for safe driving. Ignoring this code may lead to further electrical issues or damage to the mirror system over time.

How to diagnose DTC B1668

To diagnose DTC B1668, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the B1668 code.
2. Inspect the mirror control switch for proper operation.
3. Check the wiring and connectors for any signs of damage or corrosion.
4. Test the mirror motor for functionality using a multimeter.
5. Look for any mechanical obstructions that may prevent mirror movement.

How to fix DTC B1668 step-by-step instructions

To fix DTC B1668, follow these step-by-step instructions:

1. Disconnect the vehicle’s battery to ensure safety while working on electrical components.
2. Remove the door panel to access the mirror motor and wiring.
3. Inspect and repair any damaged wiring or connectors found during diagnosis.
4. If the mirror motor is faulty, replace it with a new or refurbished unit.
5. Reassemble the door panel and reconnect the battery.
6. Test the mirror adjustment functionality to ensure the issue is resolved.

How to erase DTC B1668

To erase DTC B1668 from the vehicle’s computer, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Access the trouble codes menu on the scanner.
3. 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 take the vehicle for a test drive to ensure the code does not reappear.

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