We specialize in keeping your vehicle safe and reliable with routine maintenance, service, and repairs.

Check engine diagnostics, maintenance and repairs by certified technicians

When your car or truck’s check engine light comes on, it can signal a number of issues. At A & P Auto, our technicians run complete check engine diagnostics. We interpret diagnostic trouble codes and inspect your vehicle. Once we’ve diagnosed the problem, we have the expertise to complete the repairs.

  • Check engine diagnostics and expert code analysis
  • Professional repairs with quality auto parts
  • Fast, efficient maintenance and service
Professional repairs
Engine Light in car meter
Advanced Engine Diagnostics

Expert Check Engine Diagnostics, Repairs, and Maintenance

The check engine light is triggered by the output from your onboard computer diagnostic system. Its single purpose is to inform you of situations that need to be addressed. Your vehicle’s problem could be a loose gas cap or a bad spark plug. It could be something more complicated like a malfunctioning catalytic converter.
When your check engine display lights up, it always involves a problem that reduces your car’s performance, lowers your fuel efficiency or increases toxic emissions. It’s important to have a certified technician run check engine diagnostics and complete repairs to eliminate small problems before they get worse.

water pump 1

We perform recommended maintenance to prevent check engine problems.

car service 3

We are a certified emissions repair facility with expertise in performing check engine diagnostics and repairs.

brake 1


  • Check engine dash light illuminates
  • Check engine light flashes
  • Toxic exhaust fumes
  • Poor gas mileage
coins stacked on top of each other


When you start your car, it runs internal diagnostic tests to make certain that everything is operating properly. All dashboard warning lights may flash briefly. As long as they fade out right away, there’s no cause for concern.


Steven K., Parsippany, NJ

“Driving up from NJ and my check engine light comes on and car isn't running right, similar story all garages in Leominster and Fitchburg tell me a week until they can even look at it. Pull into A&P and speak with Srini not only can he take me that day he runs the code and has great insight into the issue and explains to me very clearly. Car is done that day, drive back to NJ is great and top it all off a call to make sure I got home safe. Great Job A&P great customer service and attention to detail.”

Anthony M., New Ipswich, NH

“Been coming here for years, the staff and mechanics are top notch, approachable and get the job done fast without compromise! I can't recommend them enough, your in good hands with this company!!!”

Mrs K.

“Sirini& Emily are awesome at A&P Auto! Thanks for being so patients & giving me all my options & your advice on what would be best to do when getting my breaks replaced today- great job thank you”

Phebe Q., Leominster, MA

“This place is the best. They are reasonably priced and the don't sell you stuff you don't need. The fix it the correct way the first time. The owner is very nice and treats you with respect. The detail shop is great too. You leave your car and they will do both. And my car was dirty! But now it's like new. Thank you a&p auto.”

Scott R., West Brookfield, MA

“A great shop and a great job on my brakes. Work was done very quickly and the brakes are working super, now a month later. Pricing was reasonable. It was my first visit. Their customers seem very loyal and happy. Jeep JKU 2014”

Nadia Villalobos

“Best price for brakes!!! Great customer service, receptionist was super friendly!!! My new place to take my car.”

“I came in for an oil change greeted by very friendly staff, the mechanic shook my hand the receptionist beaming smile and greeted me, very knolegablestaff , very happy with my service today. I would highly recommend to friends and family and will definitely be back”
Chris Phillips

“I like the owner, Srini, and I trust his work and the mechanics he has hired. Srini's a nice guy, and the receptionist is also friendly and helpful. His prices are fair, and I basically like everything about this place. Wow! I found a great dentist and now a great auto mechanic. Feeling lucky...”
Louisa Dell'Amico

“The owner and his crew have provided me with honest service for over 20 years. They always communicate with you on the problem before they order any parts and they are extremely reliable ensuring my satisfaction.”
Sultan Saadeh

bbb accredited 1
36 36 PAC 1
ase logo 1
Mobil1 1