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Home >> Hyundai >> 2015 >> Sonata Eco >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 125 (Engine Control System Diagnosis (1 Of 2) (HEV)) >> DTC P0116: Engine Coolant Temperature Circuit Range/Performance >> General Information >> DTC Detecting Condition

General Information: DTC Detecting Condition

WARNING: This page is about a different variant/trim than selected.
Item Detecting Condition & Fail Safe Possible Cause
DTC Strategy Case 1
  • Signal Stuck Low
  1. Poor connection or damaged harness
  2. Faulty ECT sensor
  3. Faulty cooling system
Case 2
  • Signal Stuck High
Case 3
  • Signal implausible high
Enable Conditions Case 1
  • No relevant failure
  • 6V< Battery voltage
  • Coolant temperature at Start < 76°C(169°F)
Case 2
  • No relevant failure
  • 11V< Battery voltage <16V
  • Coolant temperature at Start >76°C(169°F)
  • -10°C(14°F)< Intake air temperature <70°C(158°F)
  • -10°C(14°F)< Ambient temperature
  • More than 250 sec. (cumulative) Part Load driving condition (engine rpm >1400, vehicle speed >22 mph and MAF >20 kg/h)
  • More than 200 sec. (cumulative) Low Load driving condition (trailing fuel cut off or idle with vehicle speed <12mph)
Case 3
  • No relevant failure
  • Oil temperature at engine stop of previous driving cycle >70° C(158°F)
  • Coolant temperature at engine stop of previous driving cycle >70°C(158°F)
  • Oil temperature at start <35°C(95°F)
  • Intake air temperature at start <35°C(95°F)
Threshold Value Case 1
  • Modeled coolant temperature increase > Threshold But measured coolant temperature increase
Case 2
  • Coolant temperature signal variation since engine Start < 2.25 °C(4°F)
Case 3
  • Coolant temperature in start > 53 °C(127°F) (In case of coolant temperature > threshold but oil temperature & intake air temp < threshold)
Diagnostic Time
  • Immediate
MIL On Condition
  • 2 Driving Cycles