Possible causes
– Low coolant level
– Faulty Engine Coolant Temperature Sensor
– Stuck or leaking thermostat
– Engine Coolant Temperature Sensor harness is open or shorted
– Engine Coolant Temperature Sensor circuit poor electrical connection
– Faulty Engine Coolant Temperature Sensor
– Stuck or leaking thermostat
– Engine Coolant Temperature Sensor harness is open or shorted
– Engine Coolant Temperature Sensor circuit poor electrical connection
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
HONDA Technical Service Bulletins for P2185 code
2006 HONDA ACCORD ELECTRICAL SYSTEM:WIRING
2007 HONDA ACCORD ELECTRICAL SYSTEM:WIRING
2006 HONDA CIVIC ELECTRICAL SYSTEM:WIRING
2007 HONDA CIVIC ELECTRICAL SYSTEM:WIRING