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Can Low Coolant Cause a P0128 Code?

Maya Lin-Takahashi • • 7 min read
Can Low Coolant Cause a 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.

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Similarly one may ask, can I drive my car with a p0128 code?

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.

Subsequently, question is, can having low coolant cause check engine light? Low coolant in the radiator of your car can trigger the malfunction illumination light (MIL), also known as the "check engine" light. Low coolant can affect the internal temperature of the engine, which is protected by the antifreeze.

Furthermore, what would cause a p0128 code?

There are two main causes for P0128: The most common cause is an engine coolant thermostat that has stuck open or is opening prematurely. The next cause is a problem with the engine coolant temperature sensor or the wiring associated with the sensor.

How much does it cost to fix p0128?

The average cost for an engine coolant temperature sensor replacement is between $148 and $193. Labor costs are estimated between $82 and $105 while parts are priced between $66 and $88. Estimate does not include taxes and fees. When would you like to drop off your car?

Related Question Answers

How long can you drive with a p0128 code?

So you should be able to drive some kilometres with a p0128 code. You might even go up to a 1000 mile or more with this code on. Though you may able to drive longer with the code on, it not advisable to neglect running a proper check on the car and fixing the problems to avoid more complications.

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. This will reduce fuel economy, and may hinder engine performance.
Maya Lin-Takahashi
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Maya Lin-Takahashi

Maya is a hardware enthusiast who tests and reviews smart home devices, smartphones, wearables, and audio gear. She focuses on practical consumer value and build quality.