2011 Honda Civic Si Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2011 Honda Civic Si
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2011 Honda Civic Si ProblemsEngine Leaking Oil
The 1999-2016 Honda Civic Si engine oil pressure sensor is known to leak from normal operation.
More information about the oil pressure sensor here.
To correct the leak, the sensor must be inspected, properly sealed and installed, or replaced with new.