Diagnostic Aids
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2001 Saturn SW2, 2001 Saturn SL2, 2001 Saturn SL1, 2001 Saturn SL, and 2001 Saturn SC2. However, it is still accessible from the selected car via links, so may be relevant.
DTC P0116 indicates a skewed ECT sensor reading that most likely was not caused by a wiring fault.
Engine coolant leaking from sensor into sensor connector will cause a shorted condition across sensor terminals resulting in an elevated temperature.
Use of an engine block heater at temperatures greater than 32°F (0°C) may cause DTC to set.
See appropriate SENSOR OPERATING RANGE CHARTS article.