B2135 – OBD-II DTC

OBD-II DTC B2135 – Park Brake Applied Warning Lamp Circuit Failure

DTC B2135 meaning

DTC B2135 refers to a fault in the Park Brake Applied Warning Lamp Circuit. This diagnostic trouble code indicates that the vehicle’s onboard diagnostic system has detected an issue with the circuit responsible for signaling when the parking brake is engaged. The warning lamp is crucial for alerting the driver about the status of the parking brake, and any failure in this circuit can lead to safety concerns.

DTC B2135 symptoms

Common symptoms associated with DTC B2135 may include:

• The park brake warning light remains illuminated on the dashboard.
• The park brake warning light does not illuminate when the parking brake is applied.
• Inconsistent behavior of the warning lamp, such as flickering or turning off unexpectedly.
• Possible issues with the parking brake functionality.

DTC B2135 causes

Several factors can lead to the occurrence of DTC B2135, including:

• A faulty park brake switch.
• Wiring issues, such as damaged or corroded wires in the circuit.
• A malfunctioning instrument cluster or dashboard warning lamp.
• Faulty connections or poor grounding in the circuit.
• Issues with the vehicle’s body control module (BCM).

DTC B2135 seriousness

The seriousness of DTC B2135 can vary, but it is generally considered a moderate concern. While the vehicle may still be operable, the inability to receive proper warnings about the parking brake status can lead to unsafe driving conditions. It is essential to address this issue promptly to ensure the safety of the vehicle and its occupants.

How to diagnose DTC B2135

To diagnose DTC B2135, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the B2135 code.
2. Inspect the park brake switch for proper operation and any visible damage.
3. Check the wiring and connectors associated with the park brake circuit for signs of wear or corrosion.
4. Test the park brake warning lamp to ensure it functions correctly.
5. Examine the body control module for any faults or issues.
6. Clear the code and perform a road test to see if the code reappears.

How to fix DTC B2135 step-by-step instructions

To fix DTC B2135, follow these steps:

1. Identify and replace any faulty components, such as the park brake switch or warning lamp.
2. Repair or replace damaged wiring and connectors in the park brake circuit.
3. Ensure all connections are secure and properly grounded.
4. If necessary, reprogram or replace the body control module.
5. After repairs, use an OBD-II scanner to clear the DTC and verify that the issue is resolved.

How to erase DTC B2135

To erase DTC B2135, 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 diagnostic trouble codes menu on the scanner.
4. Select the option to clear or erase the codes.
5. Confirm the action and wait for the scanner to indicate that the codes have been cleared.
6. Disconnect the scanner and perform a test drive to ensure the code does not return.

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