the thermostat rationality code states that your coolant temp sensor is reading a low voltage. thermostat was possible stuck open. just replace it.
How do I fix code P0128?
What repairs can fix the P0128 code?
Replacing the thermostat (most common repair)Replacing the coolant temperature sensor, or the wiring and connector associated with the sensor being damaged.
How much does it cost to fix P0128?
How much will it cost to fix? Running a diagnostic for a P0128 will cost around one hour of labor, which may run you between $75 and $150. If you need to replace the thermostat, the total cost for parts and labor will be around $470 to $505.
Is it safe to drive with P0128 code?
Can I drive my vehicle with a P0128 trouble code and illuminated CEL? You may drive your vehicle with a P0128 trouble code. You will not notice any issue except for maybe the temperature gauge never reaching normal levels, and possibly the Check Engine light being illuminated.
Can low coolant cause P0128 code?
Low engine coolant can alter the engine running temperature enough to signal trouble code P0128. Your intake air temperature sensor, coolant temperature sensor and coolant fan could also signal this trouble code, so these should be inspected after you look over your thermostat and coolant level.
What could cause a P0128 code?
The most common cause for P0128 is the engine coolant thermostat is stuck open. A simple way to diagnose this is to feel the radiator hose and monitor how hot the temperature of the coolant is when it starts flowing through the radiator hose.
What would cause a P0128 code?
Causes of a P0128 code include:
A bad coolant temperature sensor. The cooling fan is stuck on. A bad intake air temperature sensor. A thermostat that’s malfunctioning or stuck open (electronically controlled or traditional)
What does it mean when coolant temp is below thermostat regulating temp?
The generic P0128 code stands for “Engine Coolant Temperature Below Thermostat Regulating Temperature”. This basically means that the coolant in the engine isn’t reaching the ideal operating temperature and that the engine is essentially running cold.
Will a bad thermostat make the check engine light come on?
the most noticeable issues occur when the thermostat gets stuck in either the open or closed position. a malfunction can result in a trouble code, generated by the engine’s computer, which can turn on your check engine light.
What happens if a thermostat is stuck open?
If the thermostat becomes stuck in the open position, there is continuous flow of coolant into the radiator causing the engine to run cold. Overcooled engines run inefficiently, which leads to increased fuel consumption and higher emission levels and engine parts enduring more wear.
Can code P0128 cause overheating?
Faulty Engine Coolant Temperature Sensor – Faulty wiring or a bad sensor can also lead to a P0128 code reading. Radiator Fan Malfunction – Your car’s radiator fan helps cool the engine and the coolant. If it sticks in the on position, it will cause the coolant to heat slowly.
How much does it cost to replace car thermostat?
But for the average car owner, you can expect to pay between $140 and $300 for a professional mechanic to replace the thermostat in your vehicle for you. The cost of the actual thermostat unit itself is usually between $20 and $80 but can be more for luxury or sports cars.
How much is a thermostat replacement?
Thermostat Replacement Cost
The average cost to replace a thermostat in a home is $140 to $350, including the unit and professional installation. Thermostat prices range from $15 to $250, depending on the type, brand, and features. Nest thermostat installation costs $100 to $200 for labor if the unit is provided.
Where is the coolant temperature sensor located?
In most cars, the primary ECT sensor (ECT sensor 1) is installed near the thermostat in the cylinder head or block or on the thermostat housing. A second coolant temperature sensor could be installed in another part of the engine, or in the radiator.
How do you fix low coolant temp?
The easiest way how to fix low coolant is to begin filling your coolant back to acceptable levels and allow the coolant to soak back into the system. Upon opening your radiator cap, you will see indicators such as “max” and “min” which indicates the level of the coolant mixture currently in your tank.
