WARNING: This page is about a different car, the 2004 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: P0125-Insufficient Coolant Temp For Closed-Loop Fuel Control - Diagnostic Procedure (Test Step 1)
Courtesy of DAIMLERCHRYSLER CORP.
Fig 2: P0125-Insufficient Coolant Temp For Closed-Loop Fuel Control - Diagnostic Procedure (Test Steps 2 - 3)