2009 Honda S2000 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2009 Honda S2000
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2009 Honda S2000 ProblemsSoftware Update for False Coolant Sensor Fault Code
On certain models the PCM misinterprets data from the coolant sensor and causes the Check Engine light (MIL) to illuminate. A software update from Honda will repair this problem.
There is an issue when the ignition switch is on for about four or more hours. The powertrain control module (PCM) can misinterpret serial data and cause the Check Engine Light to illuminate. A software update from Honda will repair this problem.
The air/fuel sensor, located in the exhaust system, may be damaged by moisture in the exhaust resulting in illumination of the Check Engine Light. Replacing the damaged air/fuel sensor and updating the powertrain control module (PCM) software should correct this concern.