LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2017 >> Highlander XLE, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 39 (SFI System [1AR-FE] - Diagnostic Codes - (Except Hybrid) (8 Of 8)) >> SFI System >> DTC P0128: Thermostat [08/2014 - 11/2016] >> Description

DTC P0128: Thermostat [08/2014 - 11/2016]: Description

WARNING: This page is about a different variant/trim than selected.

This DTC is stored when the engine coolant temperature does not reach 75°C (167°F) despite sufficient engine warm-up time having elapsed.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P0128 Thermostat All of the following conditions are met for 5 seconds (2 trip detection logic):
(a) Cold start
(b) The engine is warmed up
(c) The engine coolant temperature is less than 75°C (167°F)
  • Thermostat
  • Cooling system
  • Engine coolant temperature sensor
  • ECM
Comes on DTC stored