Is a car still drivable with code P0128?

Author: Prof. Jaeden Stoltenberg  |  Last update: Wednesday, April 2, 2025

Can I Still Drive with a P0128 Code? P0128 isn't the worst code out there, but you should still have a professional mechanic check your car ASAP. Doing so assures you that your vehicle is always operating at its best, while preventing any additional damage.

How long can you drive 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.

Can you drive your car if the temperature gauge is not working?

While you can still drive with a faulty temperature gauge, it's not a good idea. Without accurate readings from the gauge, you might overstress the engine, causing additional problems. Instead, order a replacement temperature gauge from CarParts.com and enjoy fast delivery of your new part.

Will the 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.

Is a car drivable without a thermostat?

When the car is not equipped with a thermostat, it operates at 50o C. At this temperature, the humidity condenses and packs in, blending with the oil to form slush. As a result, the slush obstructs lubrication and the entire system wears out. As a result, driving a car without a thermostat degrades vehicle performance.

EricTheCarGuy Explains Check Engine Codes - P0128 Coolant Below Thermostat Regulating Temperature

How long can you drive with a bad thermostat?

While some vehicles could still make it as far as 20 miles, we would never recommend driving very far with an overheating engine. Continuing to drive an overheating car can lead to costly repairs and possibly even complete engine failure.

How do you drive a car with a bad thermostat?

If you drive with a bad thermostat, your car could overheat, causing severe and expensive engine damage. And while it's technically possible to drive without a thermostat, we don't recommend it. Your car will not reach an acceptable operating temperature, resulting in higher fuel consumption and excessive engine wear.

Is a P0128 code serious?

P0128 isn't the worst code out there, but you should still have a professional mechanic check your car ASAP. Doing so assures you that your vehicle is always operating at its best, while preventing any additional damage.

What happens if I unplug coolant temperature sensor?

It's not recommended to unplug the coolant temperature sensor unless necessary for diagnostic purposes, as it can adversely affect engine operation and potentially cause damage if left unplugged for an extended period.

Is it OK to drive car with a stuck thermostat?

Yes, you can drive a car with a thermostat stuck open, but it's not ideal and could lead to several problems over time.

What happens if you drive with a bad temperature sensor?

If the coolant temperature sensor malfunctions, it could cause your car engine to get overheated. While sometimes a faulty sensor sends a permanent cold signal to the engine, it can also send a permanent hot signal.

What happens if you don't fix the thermostat in your car?

Due to corrosion or aging, your car's thermostat can get stuck in a closed position. If this happens, the thermostat will not let the coolant reach the radiator, and, as mentioned above, the engine will overheat, causing severe damage.

How do I fix my p0128 engine code?

Check the coolant level: If the level is lower than the minimum, add more coolant and go for a short drive. If the code is still active, you must change the thermostat. Inspect the coolant temperature sensor: The primary coolant temperature sensor is in the cylinder head near the thermostat.

Can you drive with p0128 reddit?

Should be safe to drive if coolant temp stays below threshold per DTC.

How long can you go with low engine coolant?

Conclusion: Never drive your car without coolant

If you discover that you are running low and there is no gas station nearby, then it is recommended that you should call for assistance. Do not continue to drive as you may end up permanently damaging your engine.

Is it OK to drive without coolant temperature sensor?

Q: Is it OK to drive without coolant temperature sensor? A: No, it is not recommended to drive without a coolant temperature sensor.

What are the symptoms of a bad or failing coolant temperature sensor?

How to Spot a Faulty Coolant Temperature Sensor
  • Irregular reading of the dashboard gauge (should be 88-90°C when the engine is warmed up)
  • Overheating engine (highlighted by dashboard gauge)
  • Check Engine Light alert on dashboard.
  • Rough engine sound while idling.

Can a faulty temperature sensor drain battery?

It can be caused when the computer is provided with inaccurate information and as a result, it doesn't regulate the correct charge required by the battery. Subsequently, your vehicle has low battery voltage which has its own set of problems including not having enough juice to start the vehicle.

How much does it cost to replace a coolant thermostat?

Car thermostat replacement time is 30 to 60 minutes, depending on the make of the car. It will cost you around $190 to $350, including labor. Thermostat repairs usually take more time, requiring extra time to diagnose and analyze the vehicle's thermostat. It can take up to 2 hours.

What causes engine temp sensor to go bad?

Environmental factors: Exposure to extreme temperatures, humidity, corrosive chemicals, or physical damage can degrade the sensor's components over time, leading to failure. Mechanical stress: Excessive mechanical stress or vibration can damage the sensor's delicate components or connections, causing it to malfunction.

How serious is a P06DD code?

Additionally, issues with the P06DA, P06DD, and P06DE codes have to do with a problem surrounding your oil system, which can result in engine damage and even engine failure — loss of oil pressure is one of the quickest ways to seriously damage an engine.

Is it safe to drive with the code P0128?

You will probably also get some extra carbon buildup. Under 1000 miles you'll be absolutely fine, and that extra carbon will burn off once the engine is running at normal temperatures again. A 400 mile journey will be fine.

Can I drive with a cold thermostat?

As a result, the slush obstructs lubrication and the entire system wears out. As a result, driving a car without a thermostat degrades vehicle performance. Engine Parts - It is critical for drivers to warm up the engine before starting it, as starting a cold engine causes parts to wear out.

How does a car act when the thermostat is bad?

You Notice Erratic Temperature Changes

If you notice sudden and erratic temperature changes from cold to hot or hot to cold, then it could be a sign that your thermostat has stopped working correctly. Get your vehicle inspected if you notice these extreme temperature changes in your vehicle interior.

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