That little orange light is your car asking for help. Don't ignore it. Our Warwick shop runs proper diagnostics, finds the real cause, and fixes the issue right the first time. 17 years of experience reading codes and saving customers from bigger repairs down the road.
Some lights on your dashboard are easy to ignore. The check engine light isn't one of them. It can mean a loose gas cap or a failing catalytic converter — a $5 fix or a $1,500 repair. Without proper diagnostics, you don't know which one you're dealing with. The chain auto parts store down the road can pull the code, but a code is not a diagnosis. It's a starting point.
Primary Care Auto Repair has served Warwick, Cranston, East Greenwich, and the rest of Kent County for 17 years. Owner Jeff Roy and our technicians use factory-level scan tools to read every module on your vehicle — engine, transmission, ABS, body, climate. We don't just clear the light. We find the real cause and fix it so the light stays off. That's how we save Warwick drivers from repeat shop visits.
Every diagnostic visit includes a free video inspection sent straight to your phone. You see the failed sensor, the cracked vacuum hose, or the leaking gasket before we recommend a single repair. Drivers from Apponaug, Conimicut, Hoxsie, Cowesett, and Oakland Beach trust our Warwick auto shop because we explain what's happening in plain language — no jargon, no scare tactics.
The shop sits at 33 Locust Ave, just off Post Road and minutes from Warwick Mall, T.F. Green Airport, and the Route 2 corridor. Easy access from I-95 and Route 117 means most Kent County drivers can be in and out within the day. Walk-ins welcome when the schedule allows, but booking ahead is the fastest way to get diagnosed.
Same-day diagnostics available. Call now or book online.
A check engine light covers hundreds of possible issues. Some are minor. Others are urgent. Here are the most common culprits we see at our Warwick shop — and what each one means for your vehicle.
The simplest cause. A loose cap breaks the fuel system seal and trips the light. Tighten it, drive a few cycles, and the light may clear. If not, the cap itself may need replacing.
O2 sensors monitor exhaust to keep fuel mixture right. When one fails, fuel economy drops and emissions rise. Common after 100,000 miles — and a frequent cause of failed RI State Inspection.
One of the more expensive fixes. A clogged or failing converter shows up as poor performance and a stubborn check engine light. Often caused by an ignored upstream problem.
If your engine stumbles, runs rough, or the light flashes, you likely have a misfire. Driving with a flashing light damages the catalytic converter — get it diagnosed quickly.
The MAF sensor measures incoming air. A dirty or failing one throws off fuel mixture, hurts power, and triggers codes. Often cleanable, sometimes replaceable.
Tiny leaks in the fuel vapor system are common after winter driving in Warwick. They don't affect drivability but will fail emissions testing — and they trip the light constantly until fixed.
Pulling a code is the easy part. Diagnosing the real cause is what separates a real shop from a parts changer. We use proper tools, proper procedures, and proper experience on every vehicle.
We scan every module on your vehicle — engine, transmission, ABS, airbag, body, climate. Every code, pending and stored, gets reviewed before we recommend repairs.
Codes point to systems, not parts. A P0420 doesn't always mean a new catalytic converter. We test the actual cause — sensor, wiring, leak, or component — before quoting work.
Rough idle or stumble under load? We test ignition coils, spark plugs, fuel injectors, and compression to find the misfire root cause — not just throw parts at it.
Smoke testing the fuel vapor system finds leaks no scan tool can see. Critical for passing the RI State Inspection emissions portion.
Oxygen sensors, MAF sensors, MAP sensors, crank and cam sensors — we test before replacing, and use quality OE-spec parts when replacement is needed.
We test converter efficiency with proper equipment. If yours has failed, we install a quality replacement that meets emissions specs and passes Rhode Island inspection.
Fuel pump testing, injector flow checks, and fuel pressure analysis. Common issues behind hard starts, hesitation, and low fuel economy that trigger the check engine light.
Transmission-related codes need their own scan tools and procedures. We diagnose shift issues, slipping, and warning lights tied to the transmission control module.
A check engine light is an automatic fail at inspection. Get it diagnosed and fixed first, then we'll handle your RI Annual State Inspection same day.
Most check engine light shops guess and replace. We diagnose and confirm. Here's what every Warwick driver gets when they bring a lit dashboard into our shop.
See the failed sensor, the cracked hose, the leaking gasket. Every diagnostic visit includes a video walkthrough sent by text before any work begins.
Earn points on diagnostic and repair work. Redeem them for real discounts on future visits — your loyalty pays back over time.
Owner Jeff Roy brings 17 years of hands-on auto repair experience. You talk directly to the people working on your vehicle, every time.
European, Asian, and American vehicles. From BMW and Mercedes to Toyota, Honda, Ford, Jeep, and Subaru models.
A 2010 Toyota Corolla and a 2024 BMW 540i are nothing alike under the hood. Modern vehicles have dozens of electronic modules and tens of thousands of possible diagnostic codes. Some Warwick shops only have basic OBD-II readers — that's like trying to read a novel through a keyhole. We have the factory-level scan tools to access every system on every brand we service.
View All BrandsBMW, Mercedes, Audi, VW, Mini
Toyota, Honda, Lexus, Nissan, Kia, Hyundai
Ford, Chevy, Jeep, Dodge, GMC, Cadillac
Diesel and gas diagnostics
Quick answers to the diagnostic questions we hear most often at the shop.
Diagnostic fees vary based on how deep the issue runs. A quick scan and basic diagnosis is one price. Deeper testing — smoke testing the EVAP system, scope testing ignition components, or fuel system pressure analysis — runs more. We always quote upfront.
A code reader gives you a code, not a diagnosis. The same code can be caused by five different things. Replacing the wrong part wastes money and leaves the light on. We test before we replace.
If the light is solid, you can usually drive carefully to the shop. If the light is flashing, stop driving — a flashing light means a misfire that can quickly destroy your catalytic converter. Get it towed if needed.
Yes. A lit check engine light is an automatic inspection failure in Rhode Island. Get the issue diagnosed and fixed first, then we can complete your RI State Inspection at the same visit.
We won't, and you shouldn't ask other shops to either. Clearing a code without fixing the cause is dishonest, dangerous, and the light will come back. We always recommend the actual repair.
Yes. We have factory-level scan tools for European brands and the experience to interpret their unique codes — no dealership trip required.
From Apponaug Village to Oakland Beach, we help Kent County drivers turn that worrying dashboard light into a clear answer and a fast fix.
Honest diagnostics in Warwick. We find the real cause and fix it right the first time. Most diagnostics done same day. Conveniently located near Route 2, Post Road, and I-95.
