Diagnostic Aids

After confirming DTC P0116, use scan tool to access CURRENT DATA to confirm engine coolant temperature. If ECT sensor value displayed on scan tool is always -40°F (-40°C), ECT sensor circuit may be open. If ECT sensor value displayed on scan tool is always 284°F (140°C), ECT sensor circuit may be shorted. Using scan tool, read freeze frame data. Freeze frame records engine conditions when malfunction is detected.