
Diagnostics & Electrical Repair
A warning light or electrical problem needs a clear diagnosis. We investigate the concern, explain our findings, and recommend the next step.
- 5.0 · 69 reviews5.0 from 69 Google reviews
- ASE certifiedASE-certified technicians
- PA inspectionsOfficial PA inspection station
- 24-mo warranty24-month / 24,000-mile warranty
Services we provide
Check engine light diagnosis
Use diagnostic equipment, fault codes, live data, and testing to investigate the cause of a warning light.
Engine performance testing
Test engine operation to investigate rough running, misfires, hesitation, and loss of power.
Vehicle Programming & Relearns
Perform supported module programming, resets, and relearn procedures using compatible diagnostic equipment.
Electrical troubleshooting
Test circuits, power supplies, grounds, and components to trace electrical faults.
Wiring and connector repairs
Locate damaged wiring or connections and repair the affected areas to restore proper circuit operation.
Battery, starter, and alternator testing
Check the battery, starting system, and charging system to determine which component needs attention.
No-start diagnosis
Investigate why the engine will not crank or start before recommending repairs.
Battery drain diagnosis
Measure and trace unwanted electrical draw that can discharge the battery while the vehicle is parked.
ABS and other warning-light diagnosis
Scan the affected systems and test components to investigate ABS and other dashboard warning lights.
Noise diagnosis
Use dedicated noise-detection equipment and targeted checks to help locate the source of unusual sounds.
Battery Testing & Replacement
Test battery condition and install a correctly specified replacement, including registration or setup where required.
We use OEM or OE-equivalent replacement parts, with fluids selected to meet your vehicle’s specifications.
What to expect

- 01
Tell us the concern
Start with a symptom or a service that’s due.
- 02
Inspect & diagnose
We investigate what your vehicle needs.
- 03
Understand your options
Review findings and approve the work.
- 04
Repair & verify
We complete the work and check the result.
Related services
Routine Maintenance
Oil changes, scheduled maintenance, filters, and fluid services.
Engine Repair & Replacement
Fluid leaks, overheating, cooling system repairs, engine performance, and replacement.
Tech Add-ons & More
Remote starters, dash cameras, backup cameras, smartphone integration, and audio upgrades.
Common questions
- My check engine light is on. Is reading the code enough?
- A code points to a system, not always the failed part. We combine fault codes, live data, and testing to confirm the cause before recommending a repair.
- Why does my battery keep dying?
- It can be the battery, the charging system, or an electrical draw while parked. We test each one and measure any drain to find the cause.
- What is included in diagnostics and electrical repair at The Garage?
- Check engine light diagnosis, engine performance testing, vehicle Programming & Relearns, electrical troubleshooting, wiring and connector repairs, battery, starter, and alternator testing, no-start diagnosis, battery drain diagnosis, aBS and other warning-light diagnosis, noise diagnosis, and battery Testing & Replacement. We use OEM or OE-equivalent replacement parts, with fluids selected to meet your vehicle’s specifications.
- When should I bring my car in for diagnostics and electrical repair?
- Common reasons drivers visit: check engine light is on, vehicle will not start, battery keeps going dead, and electrical features work intermittently. Call 610-570-8200 or book online and we will follow up to schedule.
- How much will diagnostics and electrical repair cost?
- Check engine light diagnostics start at $150, with additional charges possible for more extensive testing. For repairs, we inspect the vehicle, explain what we found, and wait for your approval before work starts.
- Does your warranty cover diagnostics and electrical repair?
- Eligible repairs include a 2-year / 24,000-mile warranty, whichever comes first. Ask which work on your estimate is covered.

Not sure what your vehicle needs?
Tell us what it’s doing. We’ll help you take the next step.
