Hard Brake Pedal Diagnosis
A consistently hard brake pedal in a 2020 Ford Explorer indicates a loss of power brake assist, likely due to a failed vacuum booster, vacuum leak, or faulty brake booster check valve. This condition significantly increases stopping distance and requires immediate attention.
Diagnosis Details
Possible Causes
Failed brake booster vacuum hose or check valve – allows air into the system, reducing vacuum assist.
Faulty brake booster – internal diaphragm leak or mechanical failure.
Vacuum pump failure (if equipped) or engine vacuum leak – insufficient vacuum supply.
Related OBD-II Codes
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What You Should Do
Do not drive the vehicle until repaired.
Have a certified technician inspect the brake booster vacuum hose, check valve, and booster assembly.
Check for vacuum leaks at the engine intake.
Replace any damaged components and test brake pedal feel before driving.
Related Repairs
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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.