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Last Modified: 9-16-2014 6.6 C Doc ID: RM000000T9P0FWX Model Year: 2015 Model: Tundra Prod Date Range: [08/2014 - ] Title: 3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0125; Insufficient Coolant Temperature for Closed Loop Fuel Control; 2015 MY Tundra [08/2014 - ] DTC P0125 Insufficient Coolant Temperature for Closed Loop Fuel Control DESCRIPTION Refer to DTC P0115
. DTC NO. DTC DETECTION CONDITION TROUBLE AREA P0125 Engine Coolant Temperature (ECT) does not reach closed-loop enabling temperature for 20 minutes (this period varies with engine start ECT) (2 trip detection logic) ECT sensor Cooling system Thermostat MONITOR DESCRIPTION Example: The ECT is 0°C (32°F) at engine start. After about 1 minute running time, the ECT sensor still indicates that the engine is not warm enough to begin closed-loop fuel (air-fuel ratio feedback) control. The ECM interprets this as a malfunction in the sensor or cooling system and sets the DTC. MONITOR STRATEGY Related DTCs P0125: Insufficient engine coolant temperature for closed-loop fuel control Required Sensors/Components (Main) Thermostat, cooling system Required Sensors/Components (Related) Engine coolant temperature sensor and mass air flow meter Duration for 100 L (26.4 US gal) Fuel Tank: 62 seconds: Engine coolant temperature at engine start -8.33°C (17°F) or more 107 seconds: Engine coolant temperature at engine start -19.44 to -8.33°C (-3 to 17°F) 20 minutes: Less than engine coolant temperature at engine start -19.44°C (-3°F) 3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0125; Insuff... |