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P0125 Diagnostic Trouble Code Discussion for July 2009

Insufficient Coolant Temperature For Closed Loop


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Trouble Ticket Help Requests for DTC P0125
Help Request Posted
2003 Lexus IS300 3.0L Poor Fuel Economy, MIL Lamp on VIN: JTHBD19223
P0125: Insufficient Coolant Temperature For Closed Loop Fuel Control. We have a problem with the closed loop fuel control. The system does not want to go into closed loop after the car is warmed up. We have installed a new coolant sensor, thermostat, computer, and O2 B2S1. We also checked the wiring for any shorts or anything li...
July 17, 2009
2003 Lexus IS300 3.0L Poor Fuel Economy, MIL Lamp on VIN: JTHBD19223
P0125: Insufficient Coolant Temperature For Closed Loop Fuel Control. We have a problem with the closed loop fuel control. The system does not want to go into closed loop after the car is warmed up. We have installed a new coolant sensor, thermostat, computer, and O2 B2S1. We also checked the wiring for any shorts or anything li...
July 17, 2009