C1446 Park Brake Switch Circuit Failure

OBD2 Code: C1446

Description: Park Brake Switch Circuit Failure

Definition: This code indicates a malfunction in the park brake switch circuit, which is responsible for detecting the status of the parking brake. A failure in this circuit can affect the vehicle’s braking system and may trigger warning lights on the dashboard.

C1446 – Park Brake Switch Circuit Failure

Typical Severity: Moderate

Common Causes

C1446 – Park Brake Switch Circuit Failure

Common Causes:

• Faulty park brake switch
• Short circuit or open circuit in the park brake switch wiring
• Corrosion or poor connection in the park brake switch circuit
• Defective Electronic Control Unit (ECU)

 

Common Misdiagnosis

OBD2 Code: C1446

Description: Park Brake Switch Circuit Failure

Common Misdiagnosis: Replacing the park brake switch without checking for wiring issues or connector problems.

 

Common Diagnostic Steps

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OBD2 Code: C1446

Description: Park Brake Switch Circuit Failure

• Check the park brake switch for proper operation and ensure it is not stuck or damaged.
• Inspect the wiring harness and connectors for signs of damage, corrosion, or disconnection.
• Use a multimeter to test the continuity of the park brake switch circuit.
• Verify that there is power and ground at the park brake switch connector.
• If applicable, check for any blown fuses related to the park brake system.
• Consult the vehicle’s service manual for specific diagnostic procedures related to this code.
• If all components test okay, consider checking the ABS module as it may be faulty or require reprogramming.