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DTC P0116: A Range/Performance Problem In The Engine Coolant Temperature (ECT) Sensor Circuit Honda Civic GA

Testing & Diagnostics 1 illustration

The ECT Sensor is a temperature dependent resistor (thermistor). The resistance of the thermistor decreases as the engine coolant temperature increases (Scheme 135)

Scheme 135

Scheme 135: DTC P0116: A Range/Performance Problem In The Engine Coolant Temperature (ECT) Sensor Circuit

Scheme 135: DTC P0116: A Range/Performance Problem In The Engine Coolant Temperature (ECT) Sensor Circuit

Note. If DTC P0117 and/or P0118 are stored at the same time as DTC P0116, troubleshoot those DTCs first, then troubleshoot DTC P0116.