C0300Medium SeverityChassis

Park Brake Control Circuit Malfunction

What This Means

The park brake control circuit malfunction has been detected. This chassis system code affects vehicle dynamic control functions.

Common Symptoms

Chassis warning light on
Reduced functionality
System disabled
Normal driving may continue

Common Causes

Failed park brake control
Wiring damage
Sensor contamination
Module failure
Connector corrosion

Estimated Repair Cost

$100 – $500

Parts and labor (varies by vehicle and location)

Difficulty:Moderate

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For informational purposes only. Diagnostic trouble codes are starting points for diagnosis, not definitive answers. Always consult a certified mechanic for proper diagnosis and repair. Estimated costs vary by vehicle, location, and shop rates.