Expert Diagnostic Services

Get to the Root of the Problem

We Get To The Bottom Of The Issue

Many auto parts stores offer free diagnostic scans for dash lights like the check engine light. While these scans reveal vehicle fault codes, they do not pinpoint which parts have failed. At Zarn Automotive, our diagnostic services go beyond just reading codes.

Check engine light

Common Issues

Automotive diagnostics is similar to visiting a doctor when you're sick. You describe your symptoms (fault codes), and then the doctor orders tests like blood work and x-rays (diagnostic testing) to pinpoint the issue. Our experienced team at Zarn Automotive uses specialty tools and testing equipment to accurately diagnose and repair your vehicle. Common check engine light issues might include:

  • Loose or damaged gas cap
  • Faulty oxygen sensor
  • Malfunctioning catalytic converter
  • Bad spark plugs or spark plug wires
  • Issues with the mass airflow sensor
  • Faulty ignition coil(s)
Internal components of a motor vehicle

Why trust Zarn Automotive with your car's diagnostics, maintenance, and repairs?

  • Expertise You Can Trust: With over 14 years of industry experience, Zarn Automotive boasts a team of expert technicians who are dedicated to delivering top-notch service and repair solutions for all vehicle makes and models.
  • Comprehensive Services: From routine maintenance to complex repairs, we offer a wide range of automotive services to meet all your vehicle's needs under one roof, saving you time and hassle.
  • Customer Satisfaction Guaranteed: At Zarn Automotive, we prioritize your satisfaction above all else. With transparent communication, fair pricing, and a commitment to quality workmanship, we strive to exceed your expectations with every visit.

Schedule a Diagnostic Service with Zarn Automotive Today to Get to the Bottom of Your Vehicle's Issues.

Don't ignore your check engine light. Our expert team is here to ensure your vehicle is running smoothly and safely.

Reviews

Lucy Ray

Lucy Ray

7/5/2025

Me and my family all own Mercedes and this shop consistently takes care of us whenever one of us has a problem. They are honest, fair-priced, and precise. For a long time, it was a struggle to find a shop that could properly work on my Mercedes. But I am happy to say that this shop is specialized with working on Mercedes. Zarn blows every other shop out the water, even the dealership!

Heather R

Heather R

7/11/2025

I have finally found the only auto shop I will ever want and need… This team not only won my business, but my trust! I’ve got a 1999 Toyota 4runner nearing 300,000 miles on it (and hoping to get 200k more). They over delivered and under charged - a first for me, owning a car where you could justify replacing a lot. From the tremendous customer service to the phenomenal business ethic, this operation is where you want to bring your cars, no matter what repair or service is needed.

Byron Smith

Byron Smith

6/19/2025

I had an outstanding customer experience at Zarn Automotive. The owner, Neil, goes above and beyond for his customers and ensures vehicle repairs are completed right the first time. The company is located in a beautiful facility and employs friendly, professional staff. The technicians were detailed and walked me through the repair my car needed. I greatly appreciate the service Zarn Automotive provides!

Susan Peterson

Susan Peterson

7/9/2025

Fast, friendly, informative staff!! 1st time and will be my new place to go for all my Mercedes needs! Fair pricing. Fast but thorough service. Received pictures and video during the repairs/inspection. Thank you! Retired Military appreciation discount, always a plus!

Amanda Behar

Amanda Behar

5/28/2025

I appreciated their honesty with my business and concerns. They were very thorough with my cars inspection. Where I was quoted thousands to fix an emergent problem they diagnosed as a monitorable issue with an action plan for inspecting this over time. They went the extra mile to clean up my car and present it well back to us. Where good communication, expertise, and attention to details align is where you should want to do business also. Highly recommend the team at Zarn

Contact Zarn Automotive

2010 N. Yellowood Ave, Broken Arrow OK 74012

zarnautomotivellc@gmail.com

MONDAY8AM - 5PMTUESDAY8AM - 5PMWEDNESDAY8AM - 5PMTHURSDAY8AM - 5PMFRIDAY8AM - 5PMSATURDAYCLOSEDSUNDAYCLOSED

Schedule Service

Fill out the form below and our representative will get back to you ASAP with available times.

Need service sooner than ASAP? We understand. Give us a call! (918) 940-7800