What is p0128 Toyota FJ Cruiser?

P0128 Trouble Code in Toyota FJ Cruiser
The P0128 OBD II trouble code in a Toyota FJ Cruiser indicates that the engine coolant temperature has not reached its required operating temperature within a certain amount of time after starting the vehicle. This code can appear as soon as you start your vehicle or while driving. It’s essential to address this issue immediately, as vehicles with this problem have increased emissions and decreased fuel efficiency.
Symptoms and Causes:
– The most prominent symptom of the P0128 trouble code in the Toyota FJ Cruiser is the lack of heat. When the thermostat doesn’t bring the engine up to the proper operating temperature, it means that the coolant going through the heater core isn’t as hot.
– The code may also lead to a slight decrease in fuel economy.
– The P0128 code can be triggered by a missing or stuck open thermostat, a faulty coolant temp sensor, or damaged wiring to the coolant temp sensor circuit.
– Codes related to the Engine Coolant Temp Sensor (ECT), such as P0117 or P0118, may indicate that the sensor is not performing correctly.
Possible Solutions:
– It is important to complete the entire diagnostic process when diagnosing the P0128 code. Using the live data function of a diagnostic tool allows for the proper diagnosis of the P0128 code.
– The cost to diagnose the P0128 Toyota code is typically 1.0 hour of labor, and the diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type.
In summary, the P0128 trouble code in a Toyota FJ Cruiser indicates a problem with the engine coolant temperature not reaching its required operating temperature within a certain amount of time after starting the vehicle. This issue can lead to decreased fuel efficiency and increased emissions. It is important to diagnose and address this issue promptly to ensure the proper functioning of the vehicle.

Will P0128 code clear itself?

This is referred to as a permanent code. This permanent code will go away on its own after the monitor runs and passes. Until then it will be present but only when read with a scan tool and will not turn the light on. If the problem Is detected again by the computer it will first set a pending code.

How do I know if my thermostat is stuck open?

Code that stuck open so basically what you want to do you want to check for fault codes. In addition you can use a scan tool and check your agent operating temperature.

Is it OK to run car with thermostat stuck open?

You’re not going to damage the engine because as long as there is sufficient coolant the engine will not overheat. What will happen is: The car will not reach its normal operating temperature as soon as it would usually.

What happens when a coolant temperature sensor goes bad?

The faulty sensor might send a wrong signal to the computer, leading to a miscalculation in the engine timing and fuel calculation. If the computer keeps receiving a cold signal from the faulty sensor, it will interpret this as if the engine is cold and continue to inject more fuel.

What is the code P0128 on a Toyota FJ Cruiser?

Error code P0128 indicates that your engine coolant temperature is below the thermostat regulating temperature. This means that your Engine Control Module (ECM) or Powertrain Control Module (PCM) has recognized that your engine is running cooler than it’s supposed to.

Can I still drive my car with a P0128 code?

How Long Can You Drive with a P0128 Code? Although it may be possible to drive short distances with code P0128 set, you should get the issue fixed by a professional right away. Doing so will help ensure your vehicle keeps running at its best while also helping to prevent any additional damage.

How do I fix my P0128 engine code?

How do I fix my Chevy P0128 code?

1. Check the coolant level: If the level is lower than the minimum, add more coolant and go for a short drive.
2. Inspect the coolant temperature sensor: The primary coolant temperature sensor is in the cylinder head near the thermostat.

Is P0128 a thermostat or sensor?

Issues with the coolant temperature sensor will trigger additional fault codes p0116 p0117 p0118 and p0119 are all common fault codes associated with the coolant temperature sensor being a sensor it

Can you fix a stuck open thermostat?

You can try to clean or knock on a thermostat to get it unstuck. However, that’s only a short-term fix you should not rely on. Remember: a stuck thermostat is terrible news for your engine, regardless of whether it’s stuck open or closed. So, the best thing you can do is replace your stuck thermostat with a new one.

How much does it cost to fix P0128?

Estimated Cost of Repair for the P0128 Code
Depending on the root cause of the issue, the costs of fixing the code P0128 will most likely range from $150-$250.