p0128 chevy

P0128 Chevy: Causes & Fixes

by

Jeffrey
August 10, 2022
14 Views

If you’re driving a Chevy and your “check engine” light comes on, it might be because of the P0128 code.

This code indicates that there is an issue with the engine coolant temperature sensor or circuit.

In this blog post, we’ll discuss what causes the P0128 code and how to fix it.

We’ll also provide some tips on how to prevent this issue from happening in the future.

What Does Code Po128 Mean?

Code P0128 is triggered when the engine coolant temperature sensor (ECT) does not reach the correct operating temperature within a certain amount of time after starting the engine.

The ECT sensor measures the temperature of the coolant and sends a signal to the computer.

The computer uses this information to regulate the fuel mixture and ignition timing.

If the coolant is not reaching the correct temperature, it can cause the engine to run inefficiently.

This can lead to increased fuel consumption and emissions.

p0128 chevy

What Causes Code P0128 Chevy? Causes, Fixes

There are a few different things that can cause the P0128 code to trigger.

We’ll go over each one below.

1. Coolant Leaks

One of the most common causes of the P0128 code is a coolant leak.

If there’s a hole in the radiator or hoses, coolant can leak out and cause the engine to overheat.

This will trigger the P0128 code.

This sometimes also happens when you try to pump gas while your car’s engine is on.

Fix: Repair The Coolant Leak

To fix this issue, you’ll need to find and repair the coolant leak.

Once the leak has been fixed, flush the cooling system and refill it with fresh coolant.

If you’re not sure how to do this, take your car to a mechanic.

Prevention: Check For Coolant Leaks Regularly

You can prevent this issue by regularly checking for coolant leaks.

If you notice any coolant on the ground, have your car inspected as soon as possible.

If you want to learn more about how to check for coolant leaks, click here.

2. Broken Thermostat Valve

Another common cause of the P0128 code is a broken thermostat valve.

The thermostat valve is responsible for regulating the flow of coolant through the engine.

If it’s broken, the coolant can’t flow properly and the engine will overheat.

This issue also happens sometimes when you wash your car without taking the necessary precautions.

Fix: Replace The Thermostat Valve

To fix this issue, you’ll need to replace the thermostat valve.

This is a relatively simple job that you can do yourself if you’re handy with car repairs.

If you’re not comfortable doing it yourself, take your car to a mechanic.

Prevention: Check The Thermostat Valve Regularly

You can prevent this issue by regularly checking the thermostat valve.

If you notice any signs of wear or damage, have your car inspected as soon as possible.

3. Faulty Coolant Temperature Sensor

Another common cause of the P0128 code is a faulty coolant temperature sensor.

The coolant temperature sensor is responsible for sending a signal to the computer that tells it how hot the engine is.

If the sensor is not working properly, it can cause the engine to run inefficiently.

Fix: Replace The Coolant Temperature Sensor

To fix this issue, you’ll need to replace the coolant temperature sensor.

This is a relatively simple job that you can do yourself if you’re handy with car repairs.

If you’re not comfortable doing it yourself, take your car to a mechanic.

Prevention: Check The Coolant Temperature Sensor Regularly

You can prevent this issue by regularly checking the coolant temperature sensor.

If you notice any signs of wear or damage, have your car inspected as soon as possible.

4. Faulty Engine Coolant

Another common cause of the P0128 code is faulty engine coolant.

If the coolant is old or has been diluted, it can cause the engine to overheat.

Fix: Replace The Engine Coolant

To fix this issue, you’ll need to replace the engine coolant.

This is a relatively simple job that you can do yourself if you’re handy with car repairs.

If you’re not comfortable doing it yourself, take your car to a mechanic.

Prevention: Check The Engine Coolant Regularly

You can prevent this issue by regularly checking the engine coolant.

If you notice any signs of wear or damage, have your car inspected as soon as possible.

5. Faulty Radiator Fan

Another common cause of the P0128 code is a faulty radiator fan.

The radiator fan is responsible for cooling the engine while it’s running.

If the fan is not working properly, it can cause the engine to overheat.

Fix: Replace The Radiator Fan

To fix this issue, you’ll need to replace the radiator fan.

This is a relatively simple job that you can do yourself if you’re handy with car repairs.

If you’re not comfortable doing it yourself, take your car to a mechanic.

Prevention: Check The Radiator Fan Regularly

You can prevent this issue by regularly checking the radiator fan.

If you notice any signs of wear or damage, have your car inspected as soon as possible.

How To Repair The Code P0128 Chevy?

If you have the code P0128 Chevy, there are a few things that you can do to repair it.

The only thing that causes the code P0128 issue is the thermostat and coolant.

Take a look at the steps you should take to replace the thermostat.

  1. Locate the thermostat and disconnect the negative battery cable.
  2. Remove the radiator hose from the thermostat housing.
  3. Unscrew the housing bolts and remove the housing.
  4. Take out the old gasket and install a new one.
  5. Put the housing back in place and screw in the housing bolts.
  6. Reconnect the radiator hose and negative battery cable.
  7. Start the engine and check for leaks.

Take the following steps to repair the coolant.

  1. Locate the coolant reservoir and remove the radiator cap.
  2. Drain the coolant into a container.
  3. Remove the hose from the thermostat housing and disconnect the negative battery cable.
  4. Take out the old gasket and install a new one.
  5. Put the housing back in place and screw in the housing bolts.
  6. Reconnect the radiator hose and negative battery cable.
  7. Fill the coolant reservoir with new coolant.
  8. Start the engine and check for leaks.

If you don’t feel comfortable doing this repair yourself, take your car to a mechanic.

They will be able to diagnose and fix the issue for you.

Prevention is always better than cure, so make sure to regularly check your car for any signs of wear or damage.

If you notice anything, have your car inspected as soon as possible.

How Long Can We Drive With P0128 Code?

If you have the code p0128, you can drive your car for a short period of time.

However, it’s not advisable to drive for too long as this can cause further damage to your car.

If possible, take your car to a mechanic and have it fixed as soon as possible.

p0128 chevy

5 Disadvantages Of Driving Chevy With P0128 Code

If you’re driving a Chevy with the p0128 code, there are a few disadvantages that you should be aware of.

These include:

1. Reduced Fuel Efficiency

Your car will have reduced fuel efficiency.

This is because the engine will have to work harder to cool itself down, which uses up more fuel.

Chevy p0128 code can cause your car’s fuel efficiency to drop.

So it is important that you get it fixed as soon as possible.

2. More Emissions

Your car will produce more emissions.

This is because the engine will be working harder, which causes it to produce more emissions.

If you have a P0128 Chevy code, there are a few things that you can do to repair it.

The only thing that causes the code P0128 issue is the thermostat.

3. Overheating

Your car may overheat and cause further damage.

This is because the radiator fan is not working properly, which causes the engine to overheat.

If you have a P0128 Chevy code, it’s important to get it fixed as soon as possible.

Fixing the code p0128 chevy will prevent your car from overheating and causing further damage.

4. Poor Engine Performance

Your car’s engine performance will suffer.

This is because the engine is not able to cool itself properly, which causes it to work harder.

As a result, your car’s engine performance will suffer.

If you have a P0128 Chevy code, it’s important to get it fixed as soon as possible.

5. Damage To The Engine

If the p0128 chevy code is not fixed, it can cause damage to your car’s engine.

This is because the engine will overheat and cause parts to wear out or break.

If you have a P0128 Chevy code, it’s important to get it fixed as soon as possible.

These are just a few of the disadvantages of driving a Chevy with the p0128 code.

If you have this code, it’s important to get it fixed as soon as possible.

Frequently Asked Questions

Now that you know the causes and fixes of a P0128 chevy code.

Take a look at some of the most frequently asked questions.

Q: Can A Clogged Radiator Cause A P0128 Code?

A: No, a clogged radiator will not cause the P0128 code.

The only thing that causes the code p0128 chevy is the thermostat.

Q: What Are The Symptoms Of The P0128 Chevy Code?

A: Some of the symptoms of a p0128 chevy include poor fuel efficiency, more emissions, overheating, and damage to the engine.

Q: Can I Drive My Car With A P0128 Code?

A: You can drive your car for a short period of time with the p0128 code.

However, it’s not advisable to drive for too long as this can cause further damage to your car.

If possible, take your car to a mechanic and have it fixed as soon as possible.

Q: How Long Can I Drive My Car With The P0128 Code?

A: If you have the p0128 code, you can drive your car for a short period of time.

However, it’s not advisable to drive for too long as this can cause further damage to your car.

If possible, take your car to a mechanic and have it fixed as soon as possible.

Q: What Are The Consequences Of Driving With A P0128 Code?

A: If you’re driving with a p0128 code, there are a few disadvantages that you should be aware of.

These include reduced fuel efficiency, more emissions, overheating, and damage to the engine.

If you have a P0128 Chevy code, it’s important to get it fixed as soon as possible.

Q: Can I Fix The P0128 Chevy Code Myself?

A: Yes, you can fix the p0128 chevy code yourself.

However, it’s advisable to take your car to a mechanic and have it fixed as they will be able to diagnose the problem correctly.

Conclusion

If you have a p0128 chevy code, it’s important to get it fixed as soon as possible.

This is because it can cause a number of problems such as reduced fuel efficiency, more emissions, overheating, and damage to the engine.

If you’re driving with a p0128 code, there are a few disadvantages that you should be aware of.

These include reduced fuel efficiency, more emissions, overheating, and damage to the engine.

Jeffrey

Jeffrey Bryce is an experienced motorcycle rider with years of experience caring for motorcycles. His natural fondness for motorcycles have made him come up with LetsGoForARide.com, which is dedicated to answering and teaching you how to care for your bike with the care it requires. LetsGoForARide is the one of his important lifework in reaching out to communities of motorcycle enthusiasts on how to take care of their bike and choosing the correct spare part.