ECT Sensor Rationality Monitor

OBD System Description - ECT Sensor Rationality Monitor

System Description / Monitoring Procedure
ECM monitors ECT sensor to ensure that temperature has dropped to environmental temperature. After 5 hours (using timer module) from engine stop, when ignition is ON, ECM measures ECT signal. If difference between ECT and modeled ECT is out of criteria, the ECM will set DTC.

DTC Description / Detecting Condition / Confirmation Procedure

P011B
Refer to DTC P0116 / P011B / P0128:N32A. P011B

ECT Sensor Rationality Monitor

Operation






Enable conditions






Typical malfunction thresholds