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Home >> Lexus >> 2003 >> SC 430 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0116 Or DTC P0125 >> Circuit Description
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Circuit Description

The ECT sensor is a thermistor that monitors coolant temperature. DTC is set when after engine has been running for predetermined amount of time, sensor value is out of specified range. Possible causes are:

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