Diesel Engine Diagnostics Jerome, Idaho
When the check engine light comes on, diesel engine diagnostics in Jerome, Idaho is the first call to make. The Semi Shop runs dealer-level scan tools for Cummins, Detroit, PACCAR, and CAT, so you get dealer answers without the dealer wait. Call (208) 696-9888 — a local answers.
What does diesel diagnostics include?
We plug in with the same level of software the dealers use and pull every fault code — active, inactive, and the history the truck has been logging. Then we do the part most shops skip: we test what the codes point at. A NOx sensor code doesn't always mean a bad NOx sensor. It can be wiring, a connector, or a different fault upstream.
You get a plain-English rundown of what's wrong, what it takes to fix it, and what it costs. If the truck is safe to keep running for a while, we tell you that too. Some codes need fixing today. Some can wait until your next home time.
How long does a diagnostic take?
Most diagnostics take one to two hours. A simple code read is quick. Chasing an electrical gremlin or an intermittent fault takes longer, and we'll tell you up front when that's the case. We're open 7 AM to 10 PM every day, so you don't have to burn a whole day of hours waiting on an answer.
What will it cost?
You get a quote before we start, and the price we quote is the price you pay. If the diagnostic turns into a repair, we quote that separately before any wrench turns. No open-ended "we'll see" bills. If we come to you roadside, we state the flat call-out fee before we roll.
Why drivers on I-84 skip the dealer line
Dealer service departments in this part of Idaho can book out days, and a truck sitting is a truck not earning. We're minutes off I-84 in Jerome and we run the same scan tools for Cummins, Detroit, PACCAR, and CAT. During harvest season, when hay and grain trucks are running hard through the Magic Valley, a same-day answer matters. That's the job we built this shop for.
Driver questions
My check engine light is on but the truck runs fine. Do I need to stop?
Not always, but don't ignore it. Some codes are minor. Others start a countdown to a derate that will drop you to 5 mph. A quick scan tells us which one you have. Call (208) 696-9888 and we can help you decide.
Can you diagnose my truck on the side of the road?
Yes. We bring the scan tools to any I-84 exit from Bliss to Declo. We state a flat call-out fee before we roll, and we're available 7 AM to 10 PM every day.
Do you have dealer software or just a code reader?
Dealer-level scan tools for Cummins, Detroit, PACCAR, and CAT. That means full fault detail, forced regens, parameter checks, and system tests — not just a five-dollar code read.
Shop bays in Jerome or mobile to any I-84 exit, Bliss to Declo · 7 AM–10 PM every day · The price we quote is the price you pay.