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P0125 Diagnostic Trouble Code Discussion for October 2009

Insufficient Coolant Temperature For Closed Loop

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Trouble Ticket Help Requests for DTC P0125
Help Request Posted
1997 Toyota Corolla 1.6L MIL Lamp on VIN: 2T1BB02EOV
P0125: Insufficient Coolant Temperature For Closed Loop. Hi, we have a 1997 toyota corolla in our shop. The car came in with an engine light on. Code was po125b insufficient coolant temp for closed loop. Antifreeze was like mud, and radiator was rotted out. We changed the radiator, thermostat, coolant temp sensor fo...
October 16, 2009
1998 Chevrolet Malibu 2.4L Poor Idle Quality, Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 1G1ND52T0W
P0125: Engine Coolant Temperature Insufficient for Closed Loop Fuel Control. This vehicle came in running very poorly. I have found various problems with several systems as you can tell by the repair history.(the exhaust cam was even off a tooth due the the tensioner malfunction) Now I have isolated a misfire and bucking going up hill ...
October 28, 2009