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Check Engine Light With O2 Sensor Fault Code on Honda Civic Si

Problem Description and Possible Solution

On certain models the Powertrain Control Module (PCM) can misinterpret the secondary oxygen sensor data and set a false Check Engine Light. A software update from Honda is needed for this issue.

Problem Data
RepairPal Verified
Average mileage: (–)
3 model years affected: 2004, 2005, 2006
4 people reported this problem