Hard Brake Pedal Diagnosis
A consistently hard brake pedal in a 2020 Honda CR-V indicates a loss of power brake assist, typically due to a failed vacuum booster, vacuum leak, or faulty brake booster check valve. This condition significantly increases stopping effort and reduces braking performance, posing a safety risk.
Diagnosis Details
Possible Causes
Failed brake booster vacuum check valve or hose leak
Defective brake booster diaphragm or internal leak
Vacuum pump failure (if equipped) or restricted vacuum supply
Related OBD-II Codes
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What You Should Do
Immediately inspect the brake booster vacuum hose and check valve for cracks, disconnection, or leaks.
Test the check valve by blowing through it (should only allow flow one way).
If the hose and valve are intact, the brake booster itself is likely faulty and needs replacement.
Do not drive the vehicle until the issue is resolved.
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Disclaimer: This AI-generated diagnosis is for informational reference only. Always consult a qualified mechanic for an in-person inspection. AutOwner is not responsible for decisions made based on this information.