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Engine Diagnostics in Allentown, PA
A code reader tells you where the problem showed up, not what caused it. We use professional scan tools and live data to trace the actual fault, then explain what it means for your car and what it costs to fix.
- Certified Technicians
- Warranty Backed
- Free Estimates
- All Makes & Models
Symptoms you need this service
- Check engine light on or flashing
- The car stalls, surges or idles rough
- Fuel economy has dropped noticeably
- The vehicle failed emissions testing
- A warning light comes on and goes off again
- Strange smells or a rotten-egg odor
What the repair involves
Full scan and live data
We pull stored and pending codes, then watch sensor data while the engine runs to see what is actually out of range.
Targeted testing
Smoke tests, fuel pressure, ignition and circuit testing narrow the fault down to a specific component instead of a guess.
A clear explanation
You get the finding in plain English, what happens if it waits, and a written price for the repair.
Why choose East Side Auto Repair
- A written estimate before any work starts, and a call if anything changes
- We show you the worn part instead of asking you to take our word for it
- Warranty-backed parts and labor on the work we do
- Certified technicians who have been with the shop for years
- A neighborhood shop on E Tilghman St, not a national chain
Vehicles we service
We work on all makes and models — domestic, Japanese and European. That includes everyday cars, pickup trucks, SUVs, minivans, cargo and passenger work vans, and small business fleets running around Allentown, Bethlehem and Whitehall.
If you are not sure whether we can handle your vehicle, call the shop at (610) 864-4526 and ask. The answer is almost always yes.
Engine Diagnostics questions
Can you diagnose a check engine light?
Yes. We diagnose check engine lights every day for drivers across Allentown and the Lehigh Valley, and we explain the result before any repair begins.
Is it safe to drive with the light on?
A steady light usually means you can drive carefully and get it checked soon. A flashing light means stop driving and call us at (610) 864-4526.
Do you charge for diagnostics?
There is a diagnostic charge because it is real testing time, and we tell you the amount before you leave the car with us.
Location & hours
1316 E Tilghman St
Allentown, PA 18109
Mon–Fri 9:00 AM–6:00 PM
Sat 9:00 AM–2:00 PM
Sunday Closed
Related services
Engine Repair
Engine repair in Allentown, PA — leaks, misfires, timing, cooling and rebuilds. Honest estimates and warranty-backed work. Call (610) 864-4526.
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View page
Book engine diagnostics
Tell us the vehicle and what it is doing. We will call you back with a real number.
Ready to get it fixed?
Book online or call the shop and talk to a real person about your vehicle.
Mon–Fri 9:00 AM–6:00 PM · Sat 9:00 AM–2:00 PM · Sunday Closed