LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2002 >> Prius >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics >> Diagnostic Tests >> DTC P0125: Insufficient Coolant Temperature For Closed Loop Fuel Control >> Notes
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC P0125: Insufficient Coolant Temperature For Closed Loop Fuel Control: Notes

WARNING: Read service precautions before proceeding with service procedure. See SERVICE PRECAUTIONS .
NOTE: This DTC may be caused by the vehicle running out of fuel.
CAUTION: If Engine Control Module (ECM) replacement is instructed in following test, always ensure ECM electrical connectors and ground circuits are okay. If either are defective, repair and repeat testing to confirm ECM malfunction.