Diagnostic trouble code
P0125 is a generic OBD-II code. If your Ford Ranger has registered it, means that the ECM/PCM is getting a signal from the engine coolant temperature sensor (ECT) that the engine is not warm enough to enter closed loop fuel control. P0125 is usually caused by a bad thermostat, low coolant, or a bad ECT sensor.
Thereof, How do I fix code p0125?
– Connect a professional scan tool and verify that the code exists.
– Check for any other faults and clear the code to see if it returns.
– Analyze the data from the ECM.
– Verify the coolant level.
– Determine that the thermostat is opening properly.
– Road test the vehicle.
Also to know is, How do you diagnose a bad ECT sensor? – Poor fuel economy. One of the first symptoms associated with a problem with the coolant temperature sensor is poor fuel economy. …
– Black smoke from engine. …
– Overheating engine. …
– Check Engine Light comes on.
Subsequently, question is, How can you tell if the ECT sensor is bad? – Poor Fuel Economy. …
– Irregular Temperature Readings. …
– Black Smoke from Your Exhaust. …
– Your Engine is Overheating. …
– Your Check Engine Light is On.
Also, What does coolant temperature sensor do?
A coolant temperature sensor (CTS) (also known as an ECT sensor or ECTS (engine coolant temperature sensor) is used to measure the temperature of the coolant/antifreeze mix in the cooling system, giving an indication of how much heat the engine is giving off.
How do you know if you have a bad ECT sensor?
Specific signs are indicating bad coolant temp sensor like a change in the car’s mileage, an illuminating check engine, a cloud of black smoke coming from the exhaust pipe, and warnings of engine overheating. If you noticed any of the symptoms mentioned above, you must take your vehicle to an expert mechanic.
How do you fix insufficient coolant temperature in a closed loop fuel control?
– Verify the coolant level. …
– Check the thermostat to ensure it is opening properly.
– Inspect the coolant system for leaks and bad wiring.
– Use a voltage meter or infrared thermometer to continue diagnosing the problem. …
– Replace faulty components.
Will a bad coolant sensor throw a code?
If the coolant temperature sensor goes bad it can send a false signal to the computer and throw off the fuel and timing calculations. It is not uncommon for the coolant temperature sensor to fail and send a permanently cold signal to the computer.
What happens when a ECT sensor goes bad?
If the coolant temperature sensor goes bad it can send a false signal to the computer and throw off the fuel and timing calculations. It is not uncommon for the coolant temperature sensor to fail and send a permanently cold signal to the computer. … This will reduce fuel economy, and may hinder engine performance.
Will coolant sensor cause no start?
The sensor will not cause a no start. It could cause a hard start and a rich or lean condition only.
Where is the ECT sensor located?
The ECT sensor is located near the engine thermostat, which calculates the temperature within the engine. The engine coolant temperature sensor measures the temperature provided by the thermostat and the coolant.
What happens if your coolant temperature sensor goes bad?
If the coolant temperature sensor goes bad it can send a false signal to the computer and throw off the fuel and timing calculations. It is not uncommon for the coolant temperature sensor to fail and send a permanently cold signal to the computer. … This will reduce fuel economy, and may hinder engine performance.
What happens if you unplug the coolant temp sensor?
with the coolant temp sensor unplugged, the car will go into open loop dumping fuel. one of the requirements to go into closed loop is to be above a certain coolant temperature.
How do you use a multimeter to check a temperature gauge?
– A hot water reading should give you around . …
– Make sure the cup you use is able to hold boiling water safely.
How do you know if your coolant temp sensor is bad?
One of the first symptoms associated with a problem with the coolant temperature sensor is poor fuel economy. … This will cause the computer to think the engine is cold, even when it is not, and as a result will use more fuel than necessary. This will reduce fuel economy, and may hinder engine performance.
How do I know if my temperature sensor is bad?
– Poor Fuel Economy. …
– Irregular Temperature Readings. …
– Black Smoke from Your Exhaust. …
– Your Engine is Overheating. …
– Your Check Engine Light is On.
Can you drive with a bad coolant sensor?
In the worst cases regarding your engine’s coolant system, the black smoke could mean you can no longer safely drive your car. Faulty readings from the coolant temperature sensor can cause your car’s engine to miscalculate the fuel to air mixture within the engine.
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