4.18.1 Sensor Stuck

This monitor checks that the engine oil temperature (EOT) sensor is not stuck at a particular value. If the engine has been off for longer than a calibrated period of time and the engine speed has exceeded a calibrateable level, then the engine oil temperature must change by a calibrated amount within a set time period after engine start, or a failure will be detected. If the engine oil temperature changes by an amount equal to or greater than this threshold a normal judgement is made.