Car repair guides & OBD-II codes

Enter a trouble code, pick a symptom, or choose your vehicle — get the cause and the fix.

Why trust Innova

Three decades of vehicle diagnostics.

Innova has powered DIY and professional diagnostics since the 1990s. Every guide here starts from AskFixy, Innova's repair assistant, and is approved by Innova before it's published.

100M+Documented vehicle fixes
500M+Vehicles scanned
7M+Scanners sold
30+Years of diagnostic data
Checked line by lineEvery sentence is checked against AskFixy's answer, and Innova approves every guide before it's published.
One of the world's largest fix databases100M+ real repair outcomes across virtually every make, model, and year.
A household nameInnova scan tools are sold at AutoZone, O'Reilly Auto Parts, and Advance Auto Parts.

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Built for DIYers

Real fixes for real drivers, checked before they're published.

Innova Repair Guides is for do-it-yourself drivers who want answers that actually work. Every guide starts from AskFixy, Innova's repair assistant, and is approved by Innova before it's published, so you can skip the conflicting forum threads, fix it right the first time, and keep more money in your pocket.

Answers you can trust

Every guide starts from AskFixy, Innova's repair assistant, and is checked line by line against its answer.

Do it yourself, save money

Step-by-step repairs with the parts and tools you'll need, and when to hand the job to a shop.

Matched to your exact car

Guides tied to your year, make, model, and trouble code, from the P-code all the way to the part.

Keith Andreasen, ASE Master Certified Technician at Innova Electronics
The team behind Innova

Keith Andreasen

ASE Master Certified Technician · Innova Electronics

Keith leads Innova's team of more than 100 engineers and ASE-certified technicians.

From the team behind the CarMD® Vehicle Health Index →
The diagnostic brand trusted where you already shop

Frequently asked questions

Are these repair guides free?

Yes. Every guide on Innova Repair Guides is free to read. Search a trouble code, describe a symptom, or pick your vehicle to get the full diagnosis and step-by-step fix.

How do I find the repair for my specific car?

Enter your OBD-II trouble code, describe the symptom, or choose your year, make, and model. Guides are written for a specific year, make, and model.

Where does the information in these guides come from?

Every guide starts from AskFixy, Innova's AI repair assistant, asked about the exact trouble code and vehicle. Every sentence is checked against AskFixy's answer, and a person at Innova reviews and approves each guide before it's published.

Do I need an OBD2 scanner to use these guides?

A scanner helps you read the exact trouble code before you start a repair. Innova scan tools are available at AutoZone, O'Reilly Auto Parts, and Advance Auto Parts.

Will these guides help me save money on car repairs?

That's the goal. Each guide lists the parts and tools you'll need, and says when a job is better left to a shop.