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Johnny's AutomotiveJohnny's Automotive
Sebring, FL

Computer Diagnostics at our Sebring shop

Bring it to our Sebring shop and we'll handle the computer diagnostics. Here's where to find us, when we're open, and how to book a time.

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Sebring, FL435 North Orange StreetBook a time online
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Where to find our Sebring shop

Address, hours, and directions for the shop that handles your computer diagnostics.

Address

435 North Orange Street
Sebring, FL 33870

Shop phone

(863) 471-0044

Hours

Monday
7:30 AM to 5:30 PM
Tuesday
7:30 AM to 5:30 PM
Wednesday
7:30 AM to 5:30 PM
Thursday
7:30 AM to 5:30 PM
Friday
7:30 AM to 5:30 PM
Saturday
Closed
Sunday
Closed
Options

Computer Diagnostics options in Sebring

Choose the right computer diagnostics service for your needs.

Check Engine Light

Check engine light on? We pinpoint the exact cause with advanced diagnostics and provide clear repair options — no guesswork.

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Pre-Purchase Inspection

Buying a used car? Our thorough multi-point inspection uncovers hidden problems so you can buy with confidence.

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Vehicle Inspection

Vehicle Inspection evaluates relevant vehicle systems and documents findings for repair planning.

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No Start Diagnosis

No Start Diagnosis evaluates relevant vehicle systems and documents findings for repair planning.

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Electrical Diagnosis

Electrical Diagnosis evaluates relevant vehicle systems and documents findings for repair planning.

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Charging System Diagnosis

Charging System Diagnosis evaluates relevant vehicle systems and documents findings for repair planning.

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Overheating Diagnosis

Overheating Diagnosis evaluates relevant vehicle systems and documents findings for repair planning.

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Brake Noise Diagnosis

Brake Noise Diagnosis evaluates relevant vehicle systems and documents findings for repair planning.

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Suspension Noise Diagnosis

Suspension Noise Diagnosis evaluates relevant vehicle systems and documents findings for repair planning.

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Steering Problem Diagnosis

Steering Problem Diagnosis evaluates relevant vehicle systems and documents findings for repair planning.

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AC Diagnosis

AC Diagnosis evaluates relevant vehicle systems and documents findings for repair planning.

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Vibration Diagnosis

Vibration Diagnosis evaluates relevant vehicle systems and documents findings for repair planning.

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Fluid Leak Diagnosis

Fluid Leak Diagnosis evaluates relevant vehicle systems and documents findings for repair planning.

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Recent Computer Diagnostics Work in Sebring

Real jobs completed by our team in the Sebring area

Our team

Our Team

September 2026

Why Is My Check Engine Light Flashing and Car Stalling?

The Problem

The vehicle owner reported that the check engine light was intermittently on, and the car sometimes surged and felt like it wanted to stall.

What We Found

The technician found that the throttle body was dirty, which can affect engine performance and cause stalling.

The Fix

The team performed a BG GDI/Fuel Injection Cleaning to service the throttle body. Additionally, they flushed and replaced the brake fluid, coolant, and transmission fluid to ensure overall vehicle performance.

The Result

After the services, the car ran smoothly without surging or stalling, and the check engine light was no longer an issue.

Pro Tip

If your check engine light comes on and your car feels like it might stall, it could be due to a dirty throttle body. Regular cleaning every 15,000 miles can prevent this issue and keep your engine running efficiently.

Our team

Our Team

August 2026

What Caused My Car to Enter Limp Mode?

The Problem

The vehicle entered limp mode, with multiple error codes including P0171, P1174, P0053, P0302, P1682, and C0242-71 appearing in the system.

What We Found

The technician identified issues with the oxygen sensor and other related components that were affecting the vehicle's performance.

The Fix

The team at our Sebring shop removed and replaced the faulty oxygen sensor. They also accessed and installed necessary components such as the engine coolant temperature sensor pigtail and the fuel injector. A final road test was performed to ensure the repair was successful.

The Result

The vehicle was restored to normal operation, with no further limp mode issues reported.

Pro Tip

If your vehicle enters limp mode, it's often due to sensor issues. Addressing oxygen sensor failures early can prevent further engine complications and maintain optimal performance.

FAQ

Computer Diagnostics in Sebring: questions answered

Answered by our licensed technicians serving Sebring.

Why do you charge for diagnosis when the parts store reads codes for free?

Because they're two different things. Reading a code takes a few seconds and tells you which system reported a fault. Finding the cause takes a technician, a lift, live data, and testing to prove which part in that system actually failed. That's the work you're paying for, and it's the part that keeps you from buying components that don't fix the car. Bring us the code you already have. It gives us a head start.

Does the diagnostic fee go toward the repair if I have you do the work?

That depends on the job, and the service advisor will lay it out at the counter before anything starts, so there are no surprises on the invoice. The bigger point is what the fee gets you either way: a confirmed cause with photos, and a quote based on the actual problem instead of a guess. Ask us when you drop the car off and we'll tell you exactly how it works for your repair.

How long does diagnosis take?

It depends on the symptom. Something that's failing right now in front of the technician can be pinned down quickly. An intermittent problem, a wiring fault, or a noise that only shows up cold takes longer, because we have to recreate the condition before we can test anything. We'll give you a time estimate up front and call you if what we find changes it. We'd rather tell you it's going to take a while than hand you a fast answer that's wrong.

What if you can't find the problem?

We'll tell you that plainly instead of picking a part and hoping. Usually it means the fault is intermittent and hasn't shown itself yet, and the next step is either leaving the car with us longer or bringing it back when the symptom is happening. You'll get everything we ruled out and how we ruled it out, which is real information even when it isn't the answer you wanted. If a job is beyond what we can test here, we'll say so rather than run up your bill.

Can you diagnose something another shop already worked on?

Yes, and we get that call a lot. We start from the car in front of us rather than from what's already been replaced, because assuming an earlier repair was right is how the same wrong answer gets repeated. Bring your paperwork if you have it. Knowing what's already been done and what changed afterward is genuinely useful. You'll get the same thing anyone else gets: a named cause, photos, and a quote, and no pressure about where you have the work done.

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