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Home >> Lexus >> 2010 >> IS 350C >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control (Diagnostic Codes (P0010-P014F) >> SFI System >> DTC P0116: Engine Coolant Temperature Circuit Range / Performance Problem >> Description

DTC P0116: Engine Coolant Temperature Circuit Range / Performance Problem: Description

Refer to DTC P0115. Refer to DESCRIPTION .

DTC No. DTC Detection Condition Trouble Area
P0116 When either of the following conditions is met
(2 trip detection logic):
  • When cold engine started and engine warmed up, engine coolant temperature sensor value does not change
  • After warmed up engine stopped and then next cold engine start performed, engine coolant temperature sensor value does not change
  • Thermostat
  • Engine coolant temperature sensor
P0116 For Mexico Models:
Case 1:
Engine coolant temperature between 35°C and 60°C (95°F and 140°F) when engine started, and conditions (a) and (b) are met (2 trip detection logic)
  • (a) Vehicle driven at varying speeds (accelerated and decelerated)
  • (b) Engine coolant temperature remains within 3°C (37.4°F) of initial engine coolant temperature

Case 2:
Engine coolant temperature more than 60°C (140°F) when engine started, and conditions (a) and (b) are met (6 trip detection logic)
  • (a) Vehicle driven at varying speeds (accelerated and decelerated)
  • (b) Engine coolant temperature measurements remain within 1°C (33.8°F) of initial engine coolant temperature on 6 successive occasions
  • Thermostat
  • Engine coolant temperature sensor