DTC P0125: Insufficient Coolant Temperature For Closed Loop Fuel Control (CALIF. Emissions): Notes

WARNING: This page is about a different car, the 2000 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.

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: Bank No. 1 refers to bank which includes cylinder No. 1. Bank No. 2 refers to bank without cylinder No. 1. A/F sensor refers to sensor No. 1 in exhaust manifold.