P0125 sensor on 2001 toyota echo

IT MEANS THE 19YEAR OLD THERMOSTAT IS DEAD.
OR ECT DEAD.
SEEM YOU FORGOT THE ECT
IN FACT FIRST THING iS I CHECK IS SCAN PID ECT
IF IT SHOWS BELOW 180F THE ECT IS BAD OR THERMOSTAT BAD OR INSTALLED WRONG WAY OR DID NOT BURP ALL AIR
.LEARN TO SCAN SENSOR USING TOOLS PID MODE.
IF AIR IS AT THE ECT IT WILL LIE, TO YOU AND READ LOW.
ECT CAN NOT READ AIR ONLY COOLANT AF50%..

THE CARS PCM MONITOR THE COOLANT TEMP FULL TIME
AND AS ENGINE WARMS AND GETS NEAR FULLY WARM
THE PCM GOES TO CLOSED LOOP.
IF NOT 0125 IS THE WARNING

1. MISSING THERMOSTAT OR THOSE SILLY FAIL SAFE STUCK OPEN..STATS , COOLANT STUCK AT 140f
2. ECT BAD , EASY TEST . SCAN IT YET (pid SCAN)
3. WIRES TO ECT CUT THE CONN FELL OFF OR IS 1/2 SEATED ONLY . BINGO?
4. AIR SURROUNDING ECT IT FAILS. BURP ALL AIR OUT OF THE SYSTEM, 100% NO AIR AND IS A SKILL SET , YOUTUBE IT:?

P0125 OBD-II Trouble Code Technical Description Insufficient Coolant Temperature For Closed Loop Fuel Control What does that mean? This means that the engine coolant temperature (ECT) sensor indicates that the engine has not reached the required temperature level to enter closed-loop operation within a specified amount of time after starting the engine. Symptoms You will likely not notice any drivability problems. Causes A code P0125 may mean that one or more of the following has happened: Insufficient warm up time Low engine coolant level Leaking or stuck open thermostat Faulty coolant temperature sensor Possible Solutions The simplest thing to do is to reset the code and see if it comes back. If the code comes back, the problem is likely going to be the result of the above causes (faulty thermostat, faulty ECT sensor, or a low coolant level). Other ECT sensor and circuit related DTCs: P0115, P0116, P0117, P0118, P0119, P0128 Register now to ask a question (free) Related P0125 DTC Discussions 1996 chevrolet Caprice p0125 Car start properly but after 5 or 10 minutes driving start doing missing and stop. After that car will not start but 20 minutes it start but again stop, if you just start the care and don?t drive it will start 24 hours with no issue but if you will go for drive than you will stuck in middle of the r... P0125 on a Saturn Sc1 My grandpa's car has a p0125 check engine light on. Tha car will not start and is running rich on fuel. We tried replacing the fuel pump and filter, fuel injectors and even the coolant temp sensor and it didn't work. What else can it be? Here's the code. P0125- closed loop fuel control insufficien... 1997 corolla engine code p0125 Im getting code p0125 in my 1997 corolla and have changed thermostat coolant temp sensor and have topped up coolant level but code keeps reappearing any sugestions would be appreciated.... 2000 4runner P0125B code Engine light came on. Local garage read code as P0125B. Internet search says engine coolant temp. sensor which I will replace. Where is it located on 3.4L engine?... camaro codes p0404 p0505 p1404 p0304 p0122 p0125 Hey I got the codes when I ran my test p0122,p0125,p0304 P0404,p0405,p1404 was wondering what's all that and the price or it better to replace the motor...

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P0125 TOYOTA - Insufficient Coolant Temperature for Closed Loop Fuel Control

Possible causes- Low engine coolant level
- Leaking or stuck open thermostat
- Faulty Engine Coolant Temperature (ECT) sensor
- Engine Coolant Temperature (ECT) sensor harness is open or shorted
- Engine Coolant Temperature (ECT) sensor electrical circuit poor connection

P0125 = low engine temperature, engine not reaches its temperature after start up.
need to check the engine thermostat, intake air and coolant temperature sensor and or dirty coolant causing incorrect reading of coolant temperature sensor.

first check radiator level if it is full and the heater is working good make sure temp gauge is functioning c orrectly it is most likely the coolant temp sensor but if this is a high milage vehicle and you have owned long time and never changed i would also replace thermostat and check plug to temp sensor forr good conections and good wires

p0125 is closed loop fuel control insufficient coolant temperature.
A code P0125 may mean that one or more of the following has happened:

• Insufficient warm up time
• Low engine coolant level
• Leaking or stuck open thermostat
• Faulty coolant temperature sensor, just reset it and see if the code comes back on. good-day !
  
  

The P0125 code means Coolant Temperature Insufficient for Closed Loop Operation. The P0125 "closed loop fuel control" thing is referring about your vehicle no longer being in "warm up" mode. In warm up mode you vehicle does not rely on sensors, it just follows default values for a specific length of time to warm up the engine, then it will adjust everything according to the sensors's inputs to the computer on the vehicle.
Take care

Whenever i get this code i like to clear it and see if it returns. Sometimes in extreme cold weather conditions it will set this code and there may not be anything wrong. What motor is in your celica?

P0125- Engine not reaching operation temp quick enough. Possible problems:

• Insufficient warm up time
• Low engine coolant level
• Leaking or stuck open thermostat
• Faulty coolant temp sensor
• P1130- A/F Sensor Circuit Range/performance, Bank 1 Sensor 1

P0125 Insufficient Coolant Temperature for Closed Loop Fuel Control
This means that the engine coolant temperature (ECT) sensor indicates that the engine
has not reached the required temperature level to enter closed-loop operation within a specified amount of time after starting the engine.

A code P0125 may mean that one or more of the following has happened:

• Insufficient warm up time
• Low engine coolant level
• Leaking or stuck open thermostat
• Faulty coolant temperature sensor

The simplest thing to do is to reset the code and see if it comes back.
If the code comes back, the problem is likely going to be the result of the above causes (faulty thermostat, faulty coolant sensor, or a low coolant level).