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Honda Civic Si Problems

Brake pedal may feel hard during cold start at high altitude on Honda Civic Si

Problem Description and Possible Solution

On some models with automatic transmissions, during a cold start at high altitude the brake pedal feels hard. Replacing the power brake booster and updating Powertrain Control Module (PCM) the with a Honda software update is needed for this issue.

(4 people reported this problem)

Honda Civic Si Vehicles With This Problem

RepairPal Verified
Average mileage: (–)
4 model years affected: 2007, 2008, 2009, 2010
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Brake problem? Or maybe a faulty head gasket cylinder?
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