MID-SOUTH ROAD SERVICE  •  COMPUTER DIAGNOSTICS  •  24/7 MOBILE
Road Service

Truck Computer Diagnostics Mobile · 24/7 · Middle TN & Southern KY

Check-engine light or a fault no one can pin down? We plug in on-site. Fault-code diagnostics, aftertreatment and DEF faults, electrical, and engine codes — read where your truck sits so it's fixed right the first time.

Fault Codes Check-Engine Aftertreatment & DEF Electrical Engine Faults On-Site
COMPUTER DIAGNOSTICS · WE COME TO YOU · 24/7

On-Site Computer Diagnostics

When a check-engine light or a derate hits, you need to know what's actually wrong before you spend a dime. We bring computer diagnostics to your truck across Middle Tennessee and Southern Kentucky, day or night — plug in, read the codes, and pinpoint the real problem on-site, then fix most of it in the same visit.

What We Diagnose

Engine Codes

  • Check-engine lights
  • Misfires & derates
  • Sensor faults

Aftertreatment & DEF

  • DEF faults
  • DPF / regen
  • SCR codes

Electrical

  • Wiring & shorts
  • Charging & starting
  • Grounds

Drivability

  • No-starts
  • Power loss
  • Rough running

Multi-Brand

  • Cummins & Detroit
  • PACCAR & Volvo
  • International & more

On-Site & Mobile

  • Roadside diagnostics
  • Yard service
  • Day or night
We read the codes and fix most of what we find on the spot — the one thing we don't handle is tires.

How It Works

1

Call or Text

Tell us where you are and what the truck is doing — codes, lights, or symptoms.

2

We Roll To You

A fully stocked service truck heads your way — fast dispatch, day or night.

3

Diagnosed On-Site

We plug in, read the codes, pinpoint the real problem — then fix most of it on the spot.

Computer Diagnostics — FAQ

Do you do truck diagnostics on-site?

Yes. We bring computer diagnostics to your truck across Middle Tennessee and Southern Kentucky — roadside, at a truck stop, or in your yard — and read the codes on the spot.

What can you diagnose?

Check-engine and fault codes, aftertreatment and DEF faults, sensor and electrical issues, derates, and hard-to-find engine problems.

Are you available nights, weekends, and holidays?

Yes. Mid-South Road Service runs 24 hours a day, 7 days a week, 365 days a year.

What engines and systems can you read?

Cummins, Detroit, PACCAR / Paccar MX, Volvo, International, and more — engine, aftertreatment, and chassis systems.

Can you fix the problem after you diagnose it?

Most of the time, yes. We diagnose and repair on-site in the same visit so you are not waiting on a second trip — the one thing we do not handle is tires.

Do you do tires?

No — tires are the one thing we don't handle. For everything else on a truck or trailer, we're your one call.

Got A Check-Engine Light? Fast dispatch — day or night, anywhere in Middle TN & Southern KY.
Mobile Service: We come to you — no shop visit needed.
931-933-0000 Text For Help