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Home >> Toyota >> 2004 >> Highlander Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 463 (Engine Control System (SFI) - Diagnostics) >> DTC P0125: Insufficient Coolant Temperature For Closed Loop Fuel Control >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2004 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.

Refer to DTC P0115 .

DTC DETECTION CONDITION

DTC No. DTC Detection Condition Trouble Area
P0125 If the engine coolant temperature (ECT) was less than -6.6°C (20°F) when starting the engine, and 20 minutes after the engine start, the ECT sensor still indicates below 20°C (68°F)
  • Cooling system
  • Engine coolant temperature sensor
  • Thermostat
If the ECT was between -6.6°C (20°F) and 10°C (50°F) when start, 5 minutes after the start, the ECT sensor still indicates below 20°C (68°F)
If the ECT was greater than 10°C (50°F) when starting the engine, and 2 minutes after the engine start, ECT sensor still indicates below 20°C (68°F)