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What You Get with a Mobile Car Diagnostics

What Do We Offer?

Ever sat there and wondered why my car won't start? You're not alone. A car not starting, trouble codes or the check engine light can cause anxiety for drivers. A lot of the time it's difficult to pin down the issue and know the next steps. That's where we come in.

Our mobile mechanic will come to your home or office and perform a car diagnostic test to identify any component problems or performance issues your car is experiencing. And, if necessary, will recommend and schedule any repairs needed on the spot.

How We Do It?

Our ASE-Certified mobile mechanics are based throughout Michigan and Texas. Once you get a car diagnostic test from us, we will send a qualified technician for your vehicle based on the time & day you selected. You get a fixed upfront quote, book an appointment & get the car diagnostic test done outside your home or office, it’s really that simple.

What We Recommend

A car diagnostic test is not a one-off occurrence that's carried out when things are going wrong - it should be regular car maintenance. We recommend you run a car diagnostic test on your vehicle once a year. This will help you prevent repairs and save money in the long run. After your diagnostic is carried out by a technician, you should schedule a test for the same time next year.

How to Book a Car Diagnostic Test With Us?

Booking a car diagnostic test with Goodhood is extremely simple. Just follow these 3 easy steps.

  • Request a fixed car diagnostic quote

  • Book an appointment

  • Pay after car diagnostics service



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by Mike, DFW

Had a great experience with Carlos he’s worked on two of my vehicles he’s very knowledgeable and well equipped thanks.

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    2020 Honda Fit

Car Diagnostics Servicing Near You



More About Us


What is a Car Diagnostic Test?

A car diagnostic test is a digital analysis of your car's computer systems and components. Modern vehicles are more digitized than ever before. Vehicle-specific software works whenever your car's engine is powered on to monitor various features and create data reports. This data is collected and analyzed during a car diagnostic test.

Car diagnostics tests scan your vehicle's components and systems to check for issues such as the engine, transmission, oil tank, throttle, brakes, and many more. Car diagnostics require specific devices and expertise to read correctly. Therefore, it's best carried out by an ASE-certified mobile mechanic from Goodhood.

How Long Does a Simple Diagnostic Test Take?

A car diagnostic test can take between an hour and an hour and a half. However, in some scenarios, this service can take between 2-3 hours. Here are some of there are more complicated issues that require further diagnosis.

Of course, more complicated issues that require further diagnosis and where components must be removed for access or testing can take 2-3 hours; depending on the severity of the issue or multiple underlying issues.

Why Has My Check Engine Light Lit Up?

A check engine light could be a minor issue, such as a faulty gas cap. However, it could mean something more serious, such as a misfiring engine. In the majority of cases, you will need to call a mobile mechanic to run an engine diagnostic test to identify and then recommend the next steps.

Why Won't Your Car Start?

This is one of the most common questions our customers ask us. There are many reasons why your car might not be starting, these include:

  • A dead battery - This is the most common reason why your car won't start. It can die for a number of reasons including headlights being left on, a loose wire in the battery, or a depleted battery life.

  • Faulty starter - if you here a clicking noise when you turn your ignition, this may be an indication that your starter is faulty.

  • Broken ignition switch - If you know your battery is working properly, but your car doesn’t turn over on the first few tries, it's likely you have a defective ignition switch.

  • Empty gas tank - It happens more than you think! You may simply have an empty tank. Be sure to check this before you call a mobile mechanic for a repair or diagnostic.

If your car won't start, you will require a car diagnostic test and/or a vehicle repair. And, if you're worried about going your broken down car to an auto shop or dealer shops, don't sweat - we'll come to you!

How Often Do I Need to Get a Car Diagnostic Test?

We recommend getting a diagnostic check for your car at least once a year. This will help you uncover minor problems with your car's health that can't be seen or heard. In other words, issues that won't trigger the engine light or any fault codes. A car diagnostic should not be a last minute resort, it should be seen as preventative car maintenance.

Will a Car Diagnostic Test Diagnose All Car Problems?

Car diagnostic tests can identify issues with major components within your car's engine, transmission, brakes, and other major components. Moreover, it will also shine a light on performance issues, including airflow and coolant, ignition coils, and your throttle (to name a few).

That being said, a simple diagnostic test will not determine the exact problem. The code-reading tools used by technicians will simply remove the engine or component parameters that are out of range. However, it will not detail the cause of the problems. This is where expertise comes into play. Our ASE- certified mobile mechanics use their experience and vehicle knowledge to help diagnose that underlying problem, and, then recommend the next steps.

What Happens During A Car Diagnostic Test?

The test begins as the scanner examines the check engine light code. Your car’s computer produces a code alongside the warning light that can indicate the source of a potential issue.

Our technicans then plug a diagnostic scanner into your vehicle to read these trouble codes and translate them into actionable information.

After that, mechanics carry out investigative work to see where and what the problem might be. They may use the error codes mentioned above to narrow down their search area. For instance, the check engine light code might indicate there’s a problem with the exhaust, so the exhaust will be the first area our mobile mechanic will check.

Following this, our technicians may recommend a follow up repair or services - depending on what they find. After the repair, the test may be repeated to ensure no more error codes are showing and the repair or repairs were successful.

Do You Offer a Service Warranty on Car Diagnostics Services?

We offer a 24 month/24,000 mi warranty on every service we offer - including car diagnostics!