Question

2000 Toyota Avalon 3.0L V6 with engine code P0125. The cooling system is ok, so is it the fuel/air sensor and O2 sensor and where is it located? This is a CA car.

Answer 1

HI there

This code can be generated from a sticky thermostat, but also a fault coolant temp sensor can cause it. Check and make sure the cooling fans aren't running non stop as well, I have seen that cause this code as well.

Answer 2

P0125 Toyota Code - Insufficient Coolant Temperature for Closed Loop Fuel Control
Read more: https://www.autocodes.com/p0125_toyota.html