FixVault

DTC P0117: Engine Coolant Temperature Circuit Low Input: DTC Detecting Condition

DTC DETECTING CONDITION

Item Detecting Condition Possible Cause
DTC Strategy
  • Voltage range check
  • Short to ground in signal harness
  • Contact resistance in connections.
  • Faulty ECT sensor
Enable Conditions
  • 6 < Battery voltage < 16V
  • After 60 seconds from engine start in case of short circuit to B+ or open circuit
Threshold value
  • Measured coolant temperature > 138°C (280°F).
Diagnostic Time
  • 5 sec.
Fall Safe
  • The limp-home value of ECTS depends on intake air temperature.