Affordable Auto Service - 952-933-0735 HOURS Affordable Auto Service - 952-933-0735 MAP Professional Auto Repair, Maintenance & Customization Services

The 4 Most Common Car Diagnostic Codes

Diagnostic Codes for CarsSince the teams competing in the Final Four and the Frozen Four (Go Gophers!) have been determined, we thought we’d stick with the theme and come up with a list of four on our own. Behold, the four most common car diagnostic codes!

Oxygen Sensor Codes – As we made mention in last week’s post about crazy car facts, the most common car problem is a faulty oxygen sensor, so it makes sense that sensor issues top the list of common diagnostic codes. If your oxygen sensor isn’t working properly, you’ll likely notice a dip in gas mileage or your car will randomly stall, neither of which are good. Get your oxygen sensor fixed before it causes bigger problems.

Engine Misfire Codes – An engine misfire code is another common code that mechanics deal with on a daily basis. If your engine is misfiring, one or more of the cylinders isn’t working properly. Not only will this impact fuel efficiency, but you’ll also likely notice that your car vibrates a bit. You never want to ignore an engine issue, so if you notice that your car shakes while idol, swing on into a service center.

Evaporative System Codes – The evaporation system is another important part of your car. The evaporation system is responsible for containing and removing vapors that are produced when fuel is burned. It’s a pretty complex problem that can be disrupted by the simplest things, like a loose gas cap. If a diagnostic test reveals an evaporation code error, try tightening the gas cap. If that doesn’t work, you’ll need to let a mechanic take a closer look.

EGR Codes – EGR stands for Exhaust Gas Recirculation, and its purpose is to control the engine’s emission of smog-causing nitrous oxides. The vehicle’s computer system controls the EGR system by opening and closing valves as needed. EGR problems can occur if you don’t regularly have your oil changed, or if you take a lot of short trips with your car. These quick trips don’t give your car enough time to adequately warm up, which can cause carbon buildup. Left unchecked, a problemed EGR system can cause major engine issues.

Related source: Bumper to Bumper Radio, KTAR 92.3FM in Phoenix


  • Self-Driving Cars Could Prevent Up To 90% Of Accidents
    Mar 11, 2015

    A new study by the consulting firm McKinsey & Company suggests that widespread acceptance of self-driving cars could reduce traffic accidents by up to 90 percent. The study suggests that mass adoption of self-driving vehicles will occur in about 15 years, and this could be bad news for collision centers. According to the study, mass adoption of […]

  • Fun Car-Related Thanksgiving Facts
    Nov 26, 2014

    Thanksgiving is tomorrow, and soon college students and families will be traversing across the country to celebrate the holiday with one another. If you’re hitting the road soon, now is a good time to brush up on last year’s blog, “5 Thanksgiving Travel Tips” to help you get to your destination safely. In spirit of […]

  • The Benefits and Drawbacks of Snow Tires
    Dec 23, 2014

    As winter weather continues to set in, drivers have a big decision to make. Should they equip their car with snow tires? Snow tires, as the name implies, are designed to provide you with a better driving experience in wintery conditions. That said, there are some drawbacks to equipping your car with snow tires. Below, […]