Book Honda computer diagnostics at our Winter Haven shop. Same technicians, same bays, every time you come in.
5100 Dundee Road, Winter Haven, FL 33884
Monday to Friday, 7:30 AM to 5:30 PM
When a scan tool pulls a stored code off your car, what comes back is a number and a short description: a lean condition, a misfire on cylinder three, a circuit reading out of range. That tells us where the car noticed something wrong. It doesn't tell us what caused it. One lean code can come from a vacuum leak, a tired fuel pump, a dirty mass airflow sensor, or an exhaust leak sitting upstream of a sensor. Replacing the part named in the description works out sometimes. When it doesn't, you've bought a part and you still have the problem.
So the code is where we start, not where we stop. From there a technician watches live data while the engine runs, compares those readings against what the manufacturer says they should be, and tests the actual circuit or component with a meter, a scope, a pressure gauge, or a smoke machine. Sometimes it means driving the car until the fault shows itself. That testing is what turns a system into a part, and it's why diagnosis takes real time. It's skilled labor with real equipment behind it, the same as any other job in the shop, which is why it gets billed like one.
A free code pull at a parts counter is a useful thing to have. It tells you a code is stored and roughly what system it lives in, which is more than the dashboard gives you, and it costs you nothing. It's a starting point. What it isn't is a diagnosis, because nobody put the car on a lift, watched it run, or tested anything. If you already have the code, bring it. We'll use it. We'll just keep going from there.
Here's what paying for diagnostic time actually buys you. A named cause, meaning the specific failure we found and how we confirmed it, not a system and not a maybe. Photos of it on your phone from the digital inspection, taken on your vehicle that day. And a quote to fix it. Whether you do that repair, with us or anywhere else, is a separate decision and it stays yours. Plenty of people take the answer and go think about it.
The math on this is simple. Diagnosis costs what it costs, once. Guessing costs a part at a time until something works, and none of those parts come back. That's what you're really protected from here: paying for repairs that don't fix anything. Whatever we do fix carries a 36 month, 36,000 mile nationwide warranty, and every one of our six shops works the same way.
Our Team
October 2026
The vehicle owner reported that the A/C was not working and the cooling fan was inoperable.
The technician at our Winter Haven shop started with initial testing and an electrical diagnosis, which were performed at no charge. The technician then removed and replaced (2) relays. The visit also produced recommendations for an instrument cluster replacement, an A/C service with testing, and a serpentine belt tensioner replacement, but none of that work was performed on this visit.
Took my Type R today here for service, and the atmosphere—great conversations with another Type R owner—mixed with the level of professionalism these guys have far exceeded my expectations. For me, I’m very particular about who services my vehicle. I will be coming back to them no matter what vehicle I have. Johnny Automotive to me in my opinion in Polk County is the gold standard in automotive services.
Bishara Bronson
Verified Google Review
A big thank you to the team at Johnny’s Automotive for the excellent service on Maria’s 2019 Honda CR-V. We’ve been catching up on a lot of preventive maintenance lately, and the final step was having the CVT transmission professionally flushed and serviced. From the service writers to the ASE-certified technicians, the entire team was outstanding — professional, knowledgeable, fast, and fair with pricing. It’s refreshing to find an automotive shop that truly takes pride in doing the job right and treating customers with respect. The CR-V is smooth & beautiful, we left with great confidence in the work that was performed. Highly recommend Johnny’s Automotive to anyone looking for honest, dependable service. Thank you again for taking such great care of us! -Mike & Maria Back on May 1 for a transmission flush on my Hyundai Kona the transmission was running fine, but you have to keep up on the preventive maintenance. A complete thorough job was done at a reasonable price and the staff is very friendly. We have found our service location for years to come. Thank you to the team at Johnnny’s automotive! 🚗👍🏼💯 Johnny’s Automotive delivered a true five-star experience. They were professional, honest, and genuinely customer-oriented from start to finish. They handled a major repair on our CR-V with confidence, kept us informed, and treated us with respect throughout the process. It’s refreshing to find a shop that still believes in great customer service. Highly recommend! Mike & Maria
Mike Schuwerk
Verified Google Review
From start to finish, Mike handled all of my issues with my Honda CR-V along with dealing with my Extended Service Contract. The guys were great, properly repairing and getting it done on a timely manner. I will be back to get my car serviced when needed.
Tim Vera
Verified Google Review
I moved in Winter Haven in 2022 brought my Honda Pilot 2005 they did a full inspection with pictures and video had fixed that needed immediate attention, I went for another check for what was worked on before it didn’t work well, so they cover it with full warranty, I was accommodated and was offered a loaner car so I was able to get to work. I thanked Mike, Richard and the whole team for their professionalism and customer care.
Marl Cruz
Verified Google Review
Oil change my 2018 Honda CRV excellent work I’ve been using them for years first time at the Dundee location all of people there seem to be happy Mark was excellent hook me up right away got me in and out with the oil change thank you very much I do appreciate it
tyrone Jones
Verified Google Review
Pick whichever one is easiest to drive to.
ASE Certified Technicians
ASE certified techs working on your vehicle
Flexible Drop-Off Hours
Convenient service options
20+ Years
2 decades of trusted service
