Propulsion Power Reduced Chevy Volt – What Are the Reasons and Fixes?

It’s possible that your Chevrolet Volt’s power can go down occasionally. It is a common problem that owners face with this particular car.

The battery of the car is draining a lot faster than usual, and there are complaints about that. You may be wondering why your Chevy Volt’s propulsion power is reduced.

There can be more than one reason for it. A decrease in the performance of the battery pack is the most common one. It can cause problems when it becomes overheated.

A reduction of propulsion power in your Chevy Volt can be caused by damaged AC/DC converters, cells with high voltages, and faulty alternators.

It is a quick overview that looks into what may cause such problems. You have no idea what the solution to that is.

We have prepared a dedicated segment for you on this issue. If you would like to learn more about this issue, you may want to read it. So without any further delay, let’s start.

Chevy Volt

What Are the Reasons?

The Chevrolet Volt is a plug-in hybrid car that uses both electricity and gasoline. It can be classified as an extended-range electric car.

The battery section is where most issues occur as it depends on the battery pack.

It is not possible to list all of the possible problems that may cause the Chevy Volt to be less powerful.

We have looked at the most common problems that you might be facing. Let’s start.

Decreased Battery Pack Performance

If the high voltage cells in your car battery fail or get severely damaged while driving, it may lower the propulsion power.

The system power of your car can be reduced due to the shorted batteries. The battery fails to provide the full amount of power to the car.

The car performed worse due to that. If the Chevy Volt’s propulsion power has gone down, it’s a good idea to check the battery pack’s capacity.

Damaged AC/DC Converter

A faulty AC/DC conversion can affect the Chevy Volt’s performance.

Direct Current (DC) and Alternating Current (AC) are used to convert Direct Current (DC) to Direct Current (AC) in your car.

There are certain situations in which a damaged AC/DC conversion won’t give the correct voltage.

When the engine is running at a lower RPM, it doesn’t need to supply current with higher voltage.

When you are revved up, it will give you a lower voltage to the engine. When the power is reduced, there will be issues when you try to accelerate your car.

Overheating Battery Packs

If you’re familiar with how engines and electronics work, then you know that overheating reduces performance.

If a vital component of a working system gets hot, it will cause thermal throttling which will reduce performance significantly.

If the battery pack of your Chevy Volt is overheating, it will fail to provide the required power to your car. The power of the engine will be decreased.

Clogged and Shorted Battery Cells

If the low-pressure fuel pump in your car malfunction, the high-pressure battery cells of your Chevy Volt can get plugged in.

The car’s power may be affected by the lack of the required amount of gasoline. You need to check the fuel pump to make sure.

The fuel pump must be a battery-only issue if it is alright. The engine of the car may stop functioning if there is an issue with the batteries.

Shorted battery cells can cause the Chevy Volt to lose its propulsion power. The propulsion power of the car is lowered when the cells with high voltage get shorted.

There can be issues with the high-pressure fuel pump as well. If you suspect something, you should have your car checked out.

Faulty Alternators

A stable flow of AC to the battery is provided by the Alternators. The high-voltage cells may be damaged if a faulty alternator fails to provide the current.

That is one of the main reasons behind reduced propulsion power. The wrong wiring can be caused by the alternator being manufactured by a third-party provider.

It is always recommended to buy spare parts from trusted manufacturers because such wiring can be lethal for the battery cells of your Chevy Volt.

The solution to Reduced Propulsion Power

Charging the battery pack is the first thing you should do if you have trouble with the power. The problem with high-voltage cells may be solved if the battery is charged.

The battery pack may need to be replaced if the issue continues after charging the battery.

To prevent battery overheating, you may consider replacing the current cooling fan with a high-quality one and check out our recommended battery packs for your Chevy Volt.

Replacing the high-voltage cells will work if the overheating is caused by the cells in the battery. If the AC/DC conversion is damaged, you can replace that as well.

It will be a recurring thing if it isn’t already. If your car isn’t running smoothly, you can try to fix it.

In the case of shorted battery cells, you should check the low and high-pressure fuel pumps. Sometimes they are the cause of this issue.

You either have to fix the pumps or replace them. The oil life of your vehicle should also be checked. When there is no oil in your car, you may run but slow down a bit.

The engine health of your car may be affected. It is a common problem for the Chevy Volt to have problems with its power plant.

If you want to avoid it, run a routine maintenance check and service your car at regular intervals.


What is Chevrolet Volt’s mountain mode?

It is possible to ride on steep roads with mountain mode on the Chevy Volt. It is possible to run the car at a steady speed and save 40% of the battery.

Is It Possible to Get a ‘Reduced Propulsion Power’ Message If the Car Is Left Fully Discharged?

Yes, you can. When you leave your car running, some of the engine buffers may be compromised and you may get messages.

Is It Possible That a Software Update Fix the ‘Propulsion Power Is Reduced’ Message?

Sometimes it can if you have outdated software on your car. It is possible to fix it by running updates and charging your battery fully.

Chevy Volt


That was all it was. Now that you know why the Chevy Volt’s power is reduced, you might be able to figure it out.

It should give you a clear idea of what the problem is and what you can do about it.

If you still have problems with your car, take it to your dealer and they will take care of it. Best of luck.

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