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Failure

The total cessation of function of a system or device, such as coil failure.

Close up of tailpipe while a car fails an emissions test

Why Your Car Could Fail an Emissions Test

Emissions tests can be a pain, but some preventative maintenance can keep your ride on the right side of the law. Learn how.

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woman removing a battery from her engine compartment to demonstrate how car batteries work

How Car Batteries Work

Ever wonder how a car battery works? Read this article and learn how they power your vehicle.

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STP motor oil in front of a red classic car in the garage

What Does Oil Do for a Car's Engine?

It's common knowledge that oil protects engines. But do you know why?

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Close up image of an engine with four fuel injectors running along the fuel rail

The Evolution Of Fuel Injection

Ever wonder about the history of fuel injection? Us too. Check out how cars moved from carburetors to electronic fuel injection.

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AutoZone associate explaining what P0496 means to a customer

P0496: EVAP Flow During Non-Purge Condition

Wondering what P0496 indicates? Learn some common causes and solutions.

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AutoZoner using a scan tool to diagnose code P0603

P0603: Internal Control Module Keep Alive Memory (KAM) Error

Seeing P0603 on your code reader? Learn what it means and what to do about it.

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AutoZone associate diagnosing P0456 with a scan tool

P0456: Evaporative Emissions System - Small Leak Detected

Learn what P0456 means and what to do about this trouble code.

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AutoZoner using Fix Finder scan tool to diagnose P0401

P0401: Insufficient EGR Flow

Seeing P0401 on your code reader? Learn some common causes and solutions to this problem.

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Duralast gold AGM power sport battery

Power Sport Batteries, Different Types Explained

AutoZone carries three different styles of power sport batteries. Here is a buying guide to help you get the right one for your vehicle.

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