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Home >> Toyota >> 2001 >> ECHO 2D Sedan, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics >> Diagnostic Tests >> DTC P0125: Insufficient Coolant Temperature For Closed Loop Fuel Control >> Diagnostic Aids

Diagnostic Aids

After confirming DTC P0125, use Toyota hand-held tester or scan tool to access CURRENT DATA to confirm voltage output of heated oxygen sensor No. 1. If displayed output voltage is always less than .1 volt, circuit may be open or shorted. Using hand-held tester or scan tool, read FREEZE FRAME data. Freeze frame data records engine conditions when malfunction is detected.

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