Honda Civic Si Problem Reports

Most Reported Honda Civic Si Problem Reports

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On certain models the Powertrain Control Module (PCM) misinterprets data from the coolant sensor and sets a false Check Engine light (MIL). A software update from Honda is required for this repair.
On some models the Powertrain Control Module (PCM) can misinterpret data and set a false Check Engine light (MIL) for catalyst failure. A software update from Honda will address this issue.