B1575 – OBD-II DTC

OBD-II DTC B1575 – Lamp Park Input Circuit Failure

DTC B1575 meaning

DTC B1575 refers to a diagnostic trouble code indicating a failure in the Lamp Park Input Circuit. This code is specific to the vehicle’s body control module (BCM) and is related to the operation of the parking lamps. The BCM monitors the input from the parking lamp switch, and if it detects an issue, it triggers this code.

DTC B1575 symptoms

Common symptoms associated with DTC B1575 may include:

• Parking lamps not functioning properly
• Dashboard warning lights illuminated
• Inconsistent operation of other lighting systems
• Possible issues with other electrical components

DTC B1575 causes

Several factors can lead to the triggering of DTC B1575, including:

• Faulty parking lamp switch
• Wiring issues, such as shorts or open circuits
• Defective body control module (BCM)
• Corrosion or poor connections in the circuit

DTC B1575 seriousness

DTC B1575 is considered a moderate issue. While it may not immediately affect the vehicle’s drivability, it can lead to safety concerns due to malfunctioning lighting systems. It is advisable to address this code promptly to ensure proper vehicle operation and safety compliance.

How to diagnose DTC B1575

To diagnose DTC B1575, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the code.
2. Inspect the parking lamp switch for any visible damage or wear.
3. Check the wiring and connectors for signs of corrosion or damage.
4. Test the voltage and ground at the parking lamp switch.
5. Examine the body control module for any faults or issues.

How to fix DTC B1575 step-by-step instructions

To fix DTC B1575, follow these steps:

1. Repair or replace any damaged wiring or connectors found during diagnosis.
2. If the parking lamp switch is faulty, replace it with a new one.
3. Ensure all connections are clean and secure to prevent corrosion.
4. If the BCM is determined to be defective, consider replacing it.
5. After repairs, recheck the system to ensure proper operation of the parking lamps.

How to erase DTC B1575

To erase DTC B1575, 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 codes.
4. Confirm the action and wait for the scanner to complete the process.
5. Disconnect the scanner and perform a test drive to ensure the code does not return.

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