Check Engine Light Diagnosis in West Springfield, MA
Short answer: a steady check engine light means get it tested soon; a flashing one means slow down and call us, because it can damage the catalytic converter.
A steady check engine light means get it tested soon. A flashing one means slow down and call us, because a misfire can damage the catalytic converter. At 12 South Boulevard we read the code, then test the car to find the real cause before any repair.
12 South Boulevard, West Springfield, MA 01089
Over 400 five star reviews on Google. Mon to Fri, 7:30 AM to 5:00 PM.

Does this sound familiar?
- The light is on steady or flashing
- The car runs rough, hesitates or stalls
- Gas mileage suddenly dropped
- You notice a fuel smell or rotten egg smell
- The car failed to start after fueling
- Another warning light came on with it
How we handle it.
A code is a starting point, not a diagnosis. The same code can come from a bad sensor, a vacuum leak, a wiring problem or a worn part. Our technicians use the code, then test the system it points to, so you don’t pay for parts that were fine.
We’ve seen it all on the check engine light at this shop. A Toyota came in with the light on and a slight rattle from the front, and the timing chains had stretched. A misfire with bad gas mileage turned out to be worn spark plugs. A BMW that chugged and stalled had a torn intake boot. Each one needed a different fix.
You’ll get a plain explanation and photos, and we start the repair only after you approve it. Most repairs carry a 3 year, 36,000 mile warranty. Most check engine diagnosis can be done the same day.
Check engine light plus a rattle.
This Toyota came in with the check engine light on and a slight rattle from the front of the engine. The timing chains had stretched. We took the engine apart and replaced all the worn chains, and it’s ready for many more miles.


Simple and clear.
We inspect and test
Our technicians find the real cause, not just the symptom.
You see it and approve
You get photos and a plain explanation. Nothing starts until you say yes.
We fix it and back it
Warranty: 3 years or 36,000 miles. Our labor is guaranteed for life.
Come see us in West Springfield.
From a West Springfield customer.
Friendly, professional, knowledgeable, diagnosed my car issues quickly and accurately. Upfront with the amount of work needed and repair costs.
What our customers say.
This auto shop gave me a great experience. They communicated to me every step of the way and kept my car in great condition. They fixed my overheating engine issue within just a couple of days. Amy and Nick were very professional and I would refer anyone to their shop. 10/10.
Friendly, professional, knowledgeable, diagnosed my car issues quickly and accurately. Upfront with the amount of work needed and repair costs.
First time customer. Very impressed! Nick listened to me and explained everything so I could understand it. Amy the front end contact wad also knowledgeable and very friendly! Very quick service. I found my new mechanic!
I love you Amy and Nick you guys are truly a blessing… I have sent you all of my friend the price were the best around thank you so much.. ♥
Precision Auto says it all. I'm fairly new to the area and now I know where to bring my car. Great work at a fair price.
Precision is the only place my family uses to our car needs. They are honest, reliable and really care. I have been using them for years now. I highly recommend them. You will NOT be disappointed
I always am treated like family by the staff at Precision. They are friendly, highly competent, knowledgeable and fair.
As always, Precision took care of my car with 100% satisfaction. Highly recommended.
Very curious and very polite and professional the quality of the work was great will use Precision again
Very helpful and thorough. Won’t bring my car anywhere else.
Precision auto saved my butt! Absolutely amazing and courteous people! Saved me a ton of money too, couldn’t believe it!
great service, communicated very well and Amy and Austin were very helpful when I had to pick up after hours
Quick, affordable, and friendly. Loved that Joyce took great care of me while I waited for my car to be completed. Everyone was knowledgeable and made sure my car was good to go!
Every time I get service done at Precision they're very professional and helpful, I highly recommend them for any work you need done to your vehicle
It was my first time here. Nick and Amy are absolutely wonderful friendly, courteous. I had no surprises everything was up front. I will tell friends and family. My new place.
The guys at Precision went above and beyond to help me out. They were very professional and did an amazing job!
I got a pre-purchase inspection here. Good communication, flexible, and they have snacks!
Good communication, easy scheduling, friendly and fair pricing!
I needed points in engine. Big job taking apart engine. Dropped off on Monday morning, car repaired Tuesday morning. Quite impressed with speed and work was awesome. I will be back again and have referred some friends to him as well.
Great group of people always a smile, very convenient to my schedule
Had an emergency flat tire and they were able to repair it and get me back on the road
Fantastic customer service and a pleasure to work with. Would highly recommend!
Very professional and accommodating shop that does honest & great work!
Friendly and knowledgeable, great place to take your car
First time coming here and I have to say it’s the best mechanic experience I ever had! Extremely honest and will only repair what needs to be done. Thank you so much you guys you definitely gained a new loyal customer! Most honest auto repair shop I’ve dealt with!
Awesome experience with Precision Auto! They diagnosed my Buick Verano fast, had great customer service, and even let me leave my car a few extra days while I was out of town. Great pricing as well, my car is good as new! Definitely recommend & will be recommending to others!
Always perfect service with OEM parts and warranty. This is a place that I trust.
My Nissan Rogue is over 10 years old, and she never made a fuss about anything until this past week when she was very ill. I brought her to Precision Auto Repair and they fixed her right up. Thank you!!
Questions about check engine light diagnosis in West Springfield.
Can I drive with the check engine light on?
If it’s steady and the car drives normally, you can usually drive a short time to get it checked. If it flashes, stop driving hard and call (413) 363-0306.
Do you just read the code?
We read it, then we test the car to find the cause. A code points to a system, not always to a bad part.
How long does a check engine diagnosis take?
Most can be done the same day. We’ll tell you what we find and what it will cost before we repair anything.
My car failed Massachusetts inspection for the check engine light. Can you help?
Yes. We’ll find out why the light is on and fix the cause, so the car is ready to go back for inspection.
You might also need.
West Springfield drivers come from all around.
Ready when you’re ready.
Call our West Springfield shop during business hours, or book online in about a minute. Most cars are back on the road the same day.
