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Home >> Toyota >> 1998 >> Tercel Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Tests W/Codes >> Self-Diagnostic Tests >> DTC P0125: Insufficient Coolant Temperature For Closed Loop Fuel Control >> Notes
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DTC P0125: Insufficient Coolant Temperature For Closed Loop Fuel Control: Notes

CAUTION: If ECM replacement is instructed in following testing, always ensure ECM connectors and ground circuit are okay. If either are suspect, repair and repeat testing to confirm ECM malfunction.
NOTE: Oxygen sensor No. 1 refers to sensor located in exhaust manifold. Oxygen sensor No. 2 refers to sensor located behind catalytic converter.