Why My Audi’s EPC Light Is On With Car Shaking – 12 Reasons!

Written By: Terrence Hines
Category: Engine

If your Audi’s EPC light is on with car shaking, this is a sign that one or more of the car’s systems are malfunctioning.

It is important to identify the exact cause of the issue to solve it. If your car starts making strange noises, it is best to take it to a professional mechanic for repairs as soon as possible.

Audi’s EPC Light Is On With Car Shaking – 12 Reasons

The Electronic Power Control (EPC) system monitors the ignition, throttle body, airflow meter, and other components to maintain proper engine performance.

If these components take a hit from more intense wear and tear than normal, they may become defunct or send flawed data to the EPC.

An illuminated EPC light indicates that the process has been interrupted by a fault in one of these components; as a result, your car may shake when you’re driving it.

In this case, it’s best to consult a professional mechanic who can assess what has caused the problem.

Addressing EPC-related issues immediately should keep your Audi running smoothly without further unexpected shakes!

Thus, to help you, here are some common reasons behind the issue. If you can pick them, you can choose the solution easily.

1. Your Engine Is Misfiring:

If you find yourself in the predicament of your engine misfiring, with your Audi’s EPC light is on with car shaking, it’s important to take steps immediately to determine what is causing this issue.

Audi's EPC Light Is On With Car Shaking

It could be relatively simple, like a dirty air filter, or require more in-depth analysis. The best way pair to decide this is by consulting with a specialized mechanic who can utilize diagnostic tools to pinpoint the source of the problem. 

Additionally, follow safety protocols to ensure you drive safely once repairs are made.  Preventative measures will help ensure that further damage isn’t done and costly repairs are dodged.

2. Spark Plugs Need To Be Replaced:

The plugs must be replaced when the Spark Plug Light comes on in your car. This will help the car ride smoothly again.

Although taking your car to a professional mechanic ensures the best results due to their expertise, you may consider replacing them yourself.

You need a socket set of the correct size to change the spark plugs. You should also understand how the engine compartment works before you try to replace the spark plugs yourself.

Once replaced at home or by a professional, you should notice an immediate improvement with your Audi giving it back its response and smooth acceleration.

3. Ignition Coil Is Faulty:

If you have an Audi and the Electronic Power Control (EPC) light is on, coupled with a shaking feeling in the car, there’s a chance the ignition coil is faulty.

Ignition coils are essential components of any vehicle as they help to create an electrical spark to ignite the air-fuel mixture in the cylinders of internal combustion engines.

When a coil fails, it can cause your car engine to misfire, stutter or intermittently stall completely – as is the case with your Audi.

Sudden jolts and sounds coming from underneath your hood may also be symptoms of a faulty ignition coil.

As such, it’s important to get it checked out by a professional mechanic so that they can carry out the appropriate repairs and get you back on the road safely.

4. There’s An Issue With The Fuel System:

If you’re having issues with your fuel system, it’s important to take it seriously. A symptom of a serious problem is an Audi’s EPC light that has come on in your car while it is shaking.

There's An Issue With The Fuel System

This could indicate mechanical issues, including malfunctioning sensors or fuel delivery problems.

In addition to the shaking and the warning light, you could experience other symptoms such as engine misfiring or reduced power.

If this problem is not fixed, it will get worse and last for a longer time. So if you think something is wrong with your fuel system, take your car to get serviced immediately.

5. The Catalytic Converter Needs To Be Cleaned Or Replaced:

If you notice your Audi’s EPC light is on with car shaking, it could be a sign that your catalytic converter needs to be cleaned or replaced.

A car’s exhaust system is vital for optimal performance, transforming hazardous emissions into far less hazardous gases.

The exhaust system can suffer serious damage from debris buildup without proper maintenance and cleaning.

To prevent any engine problems down the line, it’s important that a mechanic inspects your catalytic converter and determines whether cleaning or replacement is needed.

6. The Oil Level Is Too Low:

A low oil level can cause some serious issues in your car. For example, when the Audi’s EPC light is on with car shaking, it could indicate that the oil level is too low.

If this is the case, you should stop driving immediately and get your car checked by an expert.

Ignoring this warning could cause further damage to the engine and put you at risk of expensive repairs or a breakdown in a dangerous location.

It’s always better to be proactive and check the oil level regularly to know when something goes wrong.

7. Your Braking System Is Not Functioning Correctly:

If you notice that your Audi’s EPC light is on with car shaking while braking, it could be a sign that your braking system is not functioning correctly.

It could be due to a worn-out brake pad or defective components in the system. A professional mechanic recommends fully inspecting your braking system to avoid serious dangers and costly repairs.

Please do not attempt to repair the system yourself, as it requires knowledge and experience with the braking systems.

It is better to seek an experienced technician who can accurately diagnose and fix the problem promptly.

8. The Air Filter Needs To Be Changed:

The air filter of your car is something that needs to be changed periodically.

 Audi's EPC Light Is On With Car Shaking

Without a fresh, clean filter, your engine will not perform optimally, and you may end up with “an Audi’s EPC light is on with car shaking situation” – a sign of potentially greater problems.

Fortunately, replacing the air filter is a quick fix if caught in time and an important step to keep your engine healthy.

Therefore, it is important to pay attention to the performance of your car, checking for signs of sluggishness or other issues that could indicate a need to change out the old filter.

9. A Vacuum Leak Is Present In The Intake System:

Act quickly if you notice that your Audi EPC light is on and the car is shaking, which can be a strong sign of a vacuum leak in the intake system.

Vacuum leaks affect the engine’sengine’s performance, as they occur when air enters the intake system where it should not.

This means that rather than receiving oxygen for burning fuel efficiently. It instead receives outside air, which hampers combustion efficiency.

Addressing any vacuum leak as soon as possible prevents unnecessary damage to the engine caused by missed combustion events and ensures a smooth ride for years to come.

10. The Oxygen Sensor Needs To Be Replaced:

If your Audi’s EPC light is on with car shaking, it might be due to an old or malfunctioning oxygen sensor.

A good oxygen sensor will prevent the air-fuel mixture from becoming unbalanced, leading to poor fuel economy and damaging emissions.

Replacing the oxygen sensor may be challenging, but it doesn’t have to be. You can easily replace your old or faulty oxygen sensor with the right tools and know-how. 

Given that this is a job that any DIYer can perform, investing in replacement parts and getting it done would be worth the time and effort to keep a healthy engine for years to come.

11. There’s A Problem With Your Exhaust System:

If you’ve recently noticed your Audi EPC light is on, coupled with a shaking sensation while driving, you may have encountered a problem with your exhaust system.

Ensuring the safety and performance of your vehicle is an important task, and taking the time to identify and address the issue properly can help prevent further damage.

Depending on how bad the damage is, the repair for an exhaust system can be anything from replacing some parts to cleaning the catalytic converter to more complex options.

There's A Problem With Your Exhaust System

Quickly bring your car to an experienced automotive shop to prevent extensive damage. Their skill set will detect the problem and resolve it swiftly.

12. The Mass Air Flow (MAF) Sensor:

A Mass Air Flow (MAF) sensor is an important automotive part crucial to proper vehicle functioning.

This device can be found within most vehicles’ intake manifolds and helps monitor the air entering the engine so it runs safely and efficiently. 

It is essential to maintain this component regularly, as a faulty MAF could lead to an Audi EPC light being switched on with the car shaking.

When this happens, it is crucial to have a qualified technician conduct tests to diagnose and resolve the issue before further damage is incurred.


The Audi EPC light is on with car shaking can be a warning sign for potential engine failure.

This situation should be addressed as this could lead to expensive repairs or a complete system replacement if left unchecked.

If you’re you’re experiencing these symptoms, it is best to take your vehicle to the nearest qualified and reputable repair shop to have the issue(s) diagnosed and taken care of quickly and professionally.

Trying to repair any automotive issue yourself could lead to an even bigger mess than you started with and yet another costly repair.

Terrence Hines

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