Can brake pedal get hard if master cylinder is bad?

Yes, a hard brake pedal can be a symptom of a bad master cylinder. When the master cylinder fails, it can create a loss of hydraulic pressure, making it difficult for the brake system to function properly. As a result, the pedal may feel stiff or hard to press, indicating that the brakes are not engaging as they should. It's essential to diagnose and address the issue promptly to ensure safe braking performance.