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Last Modified: 9-16-2014 6.6 C Doc ID: RM000000TB30C0X Model Year: 2015 Model: Tundra Prod Date Range: [08/2014 - ] Title: 1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0128; Thermostat; 2015 MY Tundra [08/2014 - ] DTC P0128 Thermostat CAUTION / NOTICE / HINT DESCRIPTION This DTC is stored when the Engine Coolant Temperature (ECT) does not reach 75°C (167°F) despite sufficient engine warm-up time having elapsed. DTC NO. DTC DETECTION CONDITION TROUBLE AREA P0128 Conditions (a), (b) and (c) met for 5 seconds (2 trip detection logic): (a) Cold start (b) Engine warmed up (c) ECT less than 75°C (167°F) Water inlet with thermostat sub-assembly Cooling system ECT sensor ECM MONITOR DESCRIPTION The ECM estimates the ECT based on the starting temperature, engine loads, and engine speeds. The ECM then 1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0128; Thermo... |