Check Engine Light Flashing

CHECK ENGINE LIGHT

A flashing CEL (Check Engine Light) is something serious to be concerned about. A blinking CEL indicates that your vehicle’s engine is misfiring, which could severely damage your catalytic converters.

A misfire is when one or more of your engine’s cylinders are not providing power to the vehicle, with raw fuel possibly running into the catalytic converter. Engine misfire is a severe condition that requires immediate attention to avoid expensive repairs.

Repairing this condition immediately is important to save you money and keep your vehicle running longer. The longer the vehicle is misfiring the more damage will occur. Even a non-flashing light could indicate a less serious misfire.

FINDING OUT WHAT’S WRONG AND HOW TO FIX IT

1 – Getting your vehicle’s data
A tool is required to pull information from the vehicle so you may view it. We recommend the Innova 5110.

2 – Download Innova App
Download the Innova RepairSolutions 2 app.

While the tool is able to display some data pulled from the vehicle, the app will be able to provide more information such as the repair and costs needed for your vehicle’s repair.

The app will work with your tool, so please wait for your tool to arrive or you may visit any of our retailers to purchase it today.

3 – Get Report
Setup your account with your tool by following the instructions here.

Then create the report following the directions here.

You should receive a report that appears similar to the one below.

Viewing the repairs and costs for your vehicle

1 – Tap the Engine Element
If your check engine is on, your report should display the red Engine element on your report.
Tap this element to view the details.

2 – View your repair
Your Engine report will display.

Providing you information on the code, the fix needed, and the parts needed for repair.

Your Options

At this point, you have two options.
1. You may attempt the repair on your own now knowing the repair needed, and the needed parts for the repair.
2. You may take the vehicle to repair shop now knowing roughly the cost of repair for your issue.

Innova does not recommend ignoring a check engine light even if the vehicle drives ‘fine’ as this can create the need for very expensive repairs later, such as replacement of a catalytic converter (which can cost on average $1,500), or even the replacement of the entire engine (potentially upwards of $5,000).

Maintaining your vehicle and addressing issues like a misfire quickly maintains vehicle safety, fuel economy and longevity.

check engine light is on—and how to turn it off for good. Diagnose the cause, get fixes, and avoid guesswork.">

Got a

Check Engine Light Flashing

CHECK ENGINE LIGHT

A flashing CEL (Check Engine Light) is something serious to be concerned about. A blinking CEL indicates that your vehicle’s engine is misfiring, which could severely damage your catalytic converters.

A misfire is when one or more of your engine’s cylinders are not providing power to the vehicle, with raw fuel possibly running into the catalytic converter. Engine misfire is a severe condition that requires immediate attention to avoid expensive repairs.

Repairing this condition immediately is important to save you money and keep your vehicle running longer. The longer the vehicle is misfiring the more damage will occur. Even a non-flashing light could indicate a less serious misfire.

FINDING OUT WHAT’S WRONG AND HOW TO FIX IT

1 – Getting your vehicle’s data
A tool is required to pull information from the vehicle so you may view it. We recommend the Innova 5110.

2 – Download Innova App
Download the Innova RepairSolutions 2 app.

While the tool is able to display some data pulled from the vehicle, the app will be able to provide more information such as the repair and costs needed for your vehicle’s repair.

The app will work with your tool, so please wait for your tool to arrive or you may visit any of our retailers to purchase it today.

3 – Get Report
Setup your account with your tool by following the instructions here.

Then create the report following the directions here.

You should receive a report that appears similar to the one below.

Viewing the repairs and costs for your vehicle

1 – Tap the Engine Element
If your check engine is on, your report should display the red Engine element on your report.
Tap this element to view the details.

2 – View your repair
Your Engine report will display.

Providing you information on the code, the fix needed, and the parts needed for repair.

Your Options

At this point, you have two options.
1. You may attempt the repair on your own now knowing the repair needed, and the needed parts for the repair.
2. You may take the vehicle to repair shop now knowing roughly the cost of repair for your issue.

Innova does not recommend ignoring a check engine light even if the vehicle drives ‘fine’ as this can create the need for very expensive repairs later, such as replacement of a catalytic converter (which can cost on average $1,500), or even the replacement of the entire engine (potentially upwards of $5,000).

Maintaining your vehicle and addressing issues like a misfire quickly maintains vehicle safety, fuel economy and longevity.

 Check Engine Light?

We’ve Helped Over 150 Million Drivers Like You

For over 30 years, Innova has led the industry, helping people diagnose with speed, fix with confidence, and drive with peace of mind.
We’re not chasing trends. We set the standard.

What’s Your Car Trying to Tell You?
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The Hidden Cost of Guessing

What does my check engine light mean?

Your dashboard light came on. You don’t know why. And the shop wants $150 just to take a look. Sound familiar?

The check engine light on your dashboard means the vehicle’s onboard diagnostic system has detected a problem.

It could be something minor, like a loose gas cap, or more serious, like an engine or emissions issue. Either way, it’s your car’s way of saying, “Something’s not right.”

Since the cause isn’t always obvious, the best way to know what’s wrong is to scan the vehicle with a diagnostic tool. That’s where we come in—let us help discover the problem so you can fix it with confidence.

Let us help discover the problem

Scenario #1

You could ignore it—
and risk a $2,000 repair later.

Scenario #2

You could Google it—
but your car won’t give you straight answers.

Scenario #3

Or… you could scan it yourself, right now.

The Solution

Go to either Autozone or O’Reilly’s Auto Parts store and get a FREE scan

Understand your car’s issue from home

Use an OBD2 scanner to understand the exact problem behind your car’s issues. Simply use your phone with our FREE RepairSolutions2 app to understand the full picture.

Know What’s Wrong

Detected Issue:
P0301 – Cylinder 1 Misfire

Repair Cost

Estimated Cost:
$120–$250

Severity

Severity Level:
Moderate

Future Risk

Future Risk:
Yes (fix soon)

Safe to Drive

Driveability:
Short Distances OK

“Bought this so I could see why my check engine light was on. I really like that it not only shows the code but also gives a brief description of what might cause the code.”
- Verified Amazon Customer

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And people love us

“I would highly recommend this scanner for anyone who needs to find out why their check engine light is on.”

@Verified Amazon Customer

“My dad was having trouble figuring out the reason for an alert in his SUV. I got this for him and it instantly told him the issue and he was able to fix it.”

@Verified Amazon Customer

“These tools are great rentals for any do it yourselfer. Getting codes is easy as pie and half the time the info of what is wrong is displayed.”

@Verified Amazon Customer

“Money-wise, some scanners after one year require you to buy a yearly subscription. This one does not. Some scanners only support 1 car and require you to pay for second, third car, etc. This one does not. Some scanners are large. This one is tiny.”

@Verified Amazon Customer

“Easy setup, works great, easy to use, a very informative tool. Works fast, diagnosis entire vehicle, connected quickly , worth the price to get the answer to the codes and also projects the cost of parts to repair the vehicle.”

@Verified Amazon Customer

“I had a check engine light on my 2023 Promaster. It was easily reset and was a faulty seal on the gas cap. I also used it to reset the maintenance due light in my 2015 Lexus. It connected quickly and will be in my glove box from here on out. Very handy tool!”

@Verified Amazon Customer

Getting Started Takes Seconds

Using an OBD2 scanner is easier than you may think!

Step 2

Retrieve the fault code

Start Scanning Now

Step 3

Connect to our RS2 app and know what’s wrong

Learn more about our RepairSolutions2 (RS2) appStart Scanning Now
Still need help? Contact us

Scan Yourself vs. Visit a Mechanic

Why wait around at a shop and drop $150 just to find out what’s wrong? With a quick scan at home, you’ll know what’s up in minutes—no appointments, no guesswork. It’s faster, cheaper, and puts you in the driver’s seat.

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What users are saying

“This tool really helped, it was very easy to use and provided a lot of information. Paid for itself in one use.”

Delay Can Cost You

Many $2,000+ repairs start with a $30 part that went unchecked.
Don’t wait for the light to turn red.

Know now. Fix smart.
Drive safe.

Start Scanning Now

Decode Your Check Engine Light in Seconds.

We’d like to recommend you the following scanners for your

Check Engine Light Flashing

CHECK ENGINE LIGHT

A flashing CEL (Check Engine Light) is something serious to be concerned about. A blinking CEL indicates that your vehicle’s engine is misfiring, which could severely damage your catalytic converters.

A misfire is when one or more of your engine’s cylinders are not providing power to the vehicle, with raw fuel possibly running into the catalytic converter. Engine misfire is a severe condition that requires immediate attention to avoid expensive repairs.

Repairing this condition immediately is important to save you money and keep your vehicle running longer. The longer the vehicle is misfiring the more damage will occur. Even a non-flashing light could indicate a less serious misfire.

FINDING OUT WHAT’S WRONG AND HOW TO FIX IT

1 – Getting your vehicle’s data
A tool is required to pull information from the vehicle so you may view it. We recommend the Innova 5110.

2 – Download Innova App
Download the Innova RepairSolutions 2 app.

While the tool is able to display some data pulled from the vehicle, the app will be able to provide more information such as the repair and costs needed for your vehicle’s repair.

The app will work with your tool, so please wait for your tool to arrive or you may visit any of our retailers to purchase it today.

3 – Get Report
Setup your account with your tool by following the instructions here.

Then create the report following the directions here.

You should receive a report that appears similar to the one below.

Viewing the repairs and costs for your vehicle

1 – Tap the Engine Element
If your check engine is on, your report should display the red Engine element on your report.
Tap this element to view the details.

2 – View your repair
Your Engine report will display.

Providing you information on the code, the fix needed, and the parts needed for repair.

Your Options

At this point, you have two options.
1. You may attempt the repair on your own now knowing the repair needed, and the needed parts for the repair.
2. You may take the vehicle to repair shop now knowing roughly the cost of repair for your issue.

Innova does not recommend ignoring a check engine light even if the vehicle drives ‘fine’ as this can create the need for very expensive repairs later, such as replacement of a catalytic converter (which can cost on average $1,500), or even the replacement of the entire engine (potentially upwards of $5,000).

Maintaining your vehicle and addressing issues like a misfire quickly maintains vehicle safety, fuel economy and longevity.

.
Know exactly what’s wrong—before you spend a dime at the mechanic.

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Innova 5210

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Innova 5610
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Essential Diagnostics +
Yes

Check Engine
Yes

Check Engine
Yes

Check Engine
Yes

SMOG / Emissions
Yes

SMOG / Emissions
Yes

SMOG / Emissions
Yes

Auto Re-Link
Yes

Auto Re-Link
Yes

Auto Re-Link
Yes

Code Priority
Yes

Code Priority
Yes

Code Priority
Yes

Code Severity
Yes

Code Severity
Yes

Code Severity
No

Battery & Charging System Test
Yes

Battery & Charging System Test
Yes

Battery & Charging System Test
No

All 10 OBD Modes
Yes

8 OBD Modes
Yes

All 10 OBD Modes
No

Drive Cycle Procedures
No

Drive Cycle Procedures
Yes

Drive Cycle Procedures

No

OBD2 Live Data Graphing
Yes

OBD2 Live Data Graphing
Yes

OBD2 Live Data Graphing
No

OBD2 Live Data Record / Playback
Yes

OBD2 Live Data Record / Playback
Yes

OBD2 Live Data Record / Playback
Yes

ABS Brake Codes
Yes

ABS Brake Codes
Yes

ABS Brake Codes
No

SRS Airbag Codes
Yes

SRS Airbag Codes
Yes

SRS Airbag Codes
No

All System Scan
Yes

All System Scan
Yes

All System Scan
No

Reads TPMS/Tire Pressure
Yes

Reads TPMS/Tire Pressure
Yes

Reads TPMS/Tire Pressure
Advanced Diagnostics +
No

Read Hybrid Battery Cell Voltage
No

Read Hybrid Battery Cell Voltage
Yes

Read Hybrid Battery Cell Voltage
No

Service Checks
Yes

Service Checks
Yes

Service Checks
No

Warning Lights
No

Warning Lights
Yes

Warning Lights
No

OEM Live Data
No

OEM Live Data
Yes

OEM Live Data
No

Bidirectional System Test
No

Bidirectional System Test
Yes

Bidirectional System Test
No

Special Functions, Routines, and Calibrations
No

Special Functions, Routines, and Calibrations
Yes

Special Functions, Routines, and Calibrations
No

OBD1 CoverageRequires OBD1 Connector
No

OBD1 CoverageRequires OBD1 Connector
Yes

OBD1 CoverageRequires OBD1 Connector
No

HD Truck CoverageRequires HD Connector
No

HD Truck CoverageRequires HD Connector
Yes

HD Truck CoverageRequires HD Connector
Yes

Compatible with RS2 App
Yes

Compatible with RS2 App
Yes

Compatible with RS2 App
No

Workshop Tools
Yes

4 Workshop Tools
Yes

34 Workshop Tools
No

Secure Gateway For FCA Vehicles
No

Secure Gateway For FCA Vehicles
No

Secure Gateway For FCA Vehicles

NOTE: Please be aware that not all features are supported by all vehicles, as it varies based on each vehicle’s year, make, and model. To confirm feature coverage, please use Innova’s Coverage Checker.

“Quality scanners and easy to use. Not your typical knickknack scanner. Shows the monitors all on one page, codes when they’re pending, stored or permanent, tells you what type of computer the car has and lastly; how long the check engine light was on. In other words, this is works well and is worth your buck.”

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Our Check Engine Guru

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