Need to find the location of the ect ( engine coolant temperature ) sensor on a 1999 toyota camry V6

code p 0125 refers to insufficient cioolant temperature for closed loop fuel control===causes ---wiring--cooling system---coolant thermostat--- ECT sensor --- ECM
first place to check the level in the radiator
code p 1135 refers to air/fuel sensor heater circuit response ( bank1 sensor 1)
replace the HO2S ( heated oxygen sensor bank 1 in the exhaust manifold before the cat converter
it is possible that the faulty HO2S is triggering the first code so I wpuld consider changing it then resetting the ECM then running for 15 minutes then reading the codes again

Is the coolant full ? Thermastat good ? The sensor is located on the engine .
Engine Coolant Temperature (ECT) Sensor (VIN M)
Top left side of engine below the throttle body


Relieve coolant pressure.
Loosen the 2 air intake duct clamps and remove the air intake duct.
Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in engine electrical.
Disconnect the ECT sensor electrical connector.
Using a deep well socket and extension, remove the sensor.

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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On the 1MZ alloy block V6 it is on top between the engine coolant filler cap (not the one on the radiator) and the dogbone engine steady bar.

If you want more info, post here an email where I can send it to you

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

This means that the engine's PCM detected that the engine has not reached the required temperature level within a specified amount of time after starting the engine. The intent of the P0128 code is to indicate a faulty thermostat. Similar codes: P0125
In determining the engine did not reach a "normal" temperature, it takes into account the length of time the vehicle has been running, the intake air temperature (IAT) sensor reading, the engine coolant temperature (ECT) sensor reading, and the speed of the vehicle.
Symptoms You will likely not notice any drivability problems other than the MIL illumination.
Causes A code P0128 may mean that one or more of the following has happened:

• Low engine coolant level
• Leaking or stuck open thermostat
• Faulty cooling fan (running too much)
• Faulty coolant temperature (ECT) sensor
• Faulty intake air temperature (IAT) sensor

Possible Solutions Past experience indicates that the most likely solution is to replace the thermostat. However here are some suggestions on troubleshooting and repairing a P0128 OBD-II code:

• Verify coolant strength & level
• Verify proper cooling fan operation (check if it's running more than it should). Replace if necessary.
• Verify proper engine coolant temperature (ECT) sensor operation, replace if necessary.
• Verify proper intake air temperature (IAT) sensor operation, replace if necessary.
• If the above items check out good, replace the thermostat
• If Nissan vehicle, check for Technical Service Bulletins (TSBs), as the ECM may need to be reprogrammed to correct the P0128 code

That's a lot going on! If those are real errors, you could spend some time and money fixing it. May not be too hard, but if you have an electrical gremlin somwe here causing the problem, then that could be a pain to fix.
If clearing the code for inspection is your goal, you could look into an OBD2 bluetooth scanner to work with your phone. I use one along with Torque for Android. I can check and clear codes with my phone, but I do 95% of my maintenance myself.

P0125 OBD-II Trouble Code - 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).

Hops helps (remember rated this) TY for use Fixya.

Hello. Sorry to hear about your troubles.

The P-0125 DTC:
Specifically, the "coolant temperature is too low for closed loop operation", This indicates a partially stuck open thermostat; the coolant is not reaching the optimal temperature to allow the computer to use the various sensors on the engine; it is staying in a pre-programmed or defult mde.

The P1130 and the P1135 indicates a bad Air-Fuel sensor.
On a 4 cylinder, this would be the one on the exhaust manifold.

Replace the thermostat and the air/fuel sensor. Try to use Toyota parts; it has been shown that 'aftermarket' sensors do not perform very well in Toyotas. If you buy a 'generic' sensor, the code may remain, and you problm will not be fixed.

Thanks for choosing FixYa for asistance.

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