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P0125 Diagnostic Trouble Code Discussion for August 2010

Insufficient Coolant Temperature For Closed Loop

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Trouble Ticket Help Requests for DTC P0125
Help Request Posted
1999 Lexus GS300 3.0L MIL Lamp on VIN: JP8BF28G0X
P0125: Insufficient Coolant Temperature For Closed Loop. Is the 2 codes related,I'm testing heater circuit for both.The front O2 passes power side,but unless computer only turn ground on when engine is running I have no ground,so that would be a computer issue.I'm going for rear O2 power next.I cleared codes,mils of...
August 20, 2010