2006 Scion tC AutomaticFACTORY OEM SERVICE PROCEDURE

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

Refer to DTC P0115  (see ).

DTC DETECTION CONDITION CHART

DTC No. DTC Detection Condition Trouble Area
P0116 Case 1:
Engine Coolant Temperature (ECT) between 35°C and 60°C (95°F and 140°F) when engine started, and conditions (a) and (b) met (2 trip detection logic):
  1. Vehicle driven at varying speeds (accelerated and decelerated)
  2. ECT remains within 3°C (5.4°F) of initial ECT

Case 2:
ECT more than 60°C (140°F) when engine started, and conditions (a) and (b) met (6 trip detection logic):
  1. Vehicle driven at varying speeds (accelerated and decelerated
  2. ECT remains within 1°C (1.8°F) of initial ECT
 ECT sensor
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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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