Honda Civic Si Problem Reports

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An oil leak at the spark plug area (spark plug tubes) can be caused by a failing valve cover sealing rubber and/or camshaft holder o-ring. The sealing rubber and o-ring will need to be replaced to address this issue.

Front compliance bushings may crack and break. Damaged bushing should be replaced before damaged is done to suspension components.

On certain models the engine RPM does not drop immediately and can cause a surge when driving in first gear. A software update is required for this repair.

On some models the bump stop in the strut can cause a noise on turns. Replacement of the bump stop will fix this problem.

On some models the drivers and or the front passenger door glass will come out of it's track. The door glass will have to be replaced to address this issue.

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.

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.
On the Si, a faulty 3rd gear can cause problems shifting into third gear. Removing the transmission and replacing the third gear assembly is required to repair this issue.
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 the HX model, the Powertrain Control Module (PCM) can misinterpret oxygen sensor data and set a false Check Engine light (MIL). A software update from Honda is needed for this issue.
The rear main oil seal can leak. The transmission has to be removed to replace the rear main seal on the engine.
On certain models the Powertrain Control Module (PCM) misinterprets coolant temperature data and can turn on the Check Engine light (MIL). A software update from Honda is needed to address this issue.
On some models Powertrain Control Module (PCM) response time for idle speed and engine timing can cause the engine to stall. A software update from Honda is required to fix this problem.

On some engines a sticking variable valve timing valve can cause  the Check Engine light (MIL) to illuminate. Replacing the valve and a software update will address this issue.

Excessive second clutch wear (automatic transmission) can cause the car not to move and set a Check Engine light (MIL). Replacing the transmission is necessary when this happens.