Advanced Electrical Diagnosis

Beyond the Code Reader — Real Electrical Diagnosis

A basic OBD scan tells you a code. It doesn't tell you why. Modern vehicles have dozens of control modules, miles of wiring, and hundreds of sensors — and when something goes wrong electrically, the cause and the symptom are often in completely different places.

At Auto Tech Services, we go beyond pulling codes. We use professional-grade diagnostic equipment to trace faults through the actual circuit, test sensor outputs under real conditions, and verify module communication before recommending any repair. That's what advanced electrical diagnosis actually means.

Electrical Issues We Diagnose and Repair

• Check engine, ABS, traction control, and other warning lights
• No-start or intermittent starting problems
• Charging system issues — alternator, battery, and voltage regulation
• Parasitic battery drain — finding what's pulling power when the car is off
• Wiring harness damage, corrosion, and broken ground connections
• Faulty sensors — O2, MAF, crankshaft, camshaft, and more
• Control module faults and communication errors (U-codes)
• Power accessory failures — windows, locks, mirrors, heated seats
• Lighting system diagnosis — headlights, taillights, interior

Why Electrical Problems Need Proper Diagnosis

Guessing at electrical problems is expensive. Replacing a sensor without confirming it's actually the fault can waste hundreds of dollars and leave the real problem untouched. We see this regularly — vehicles that have had multiple parts replaced elsewhere that still aren't fixed.

We take the time to verify the fault, trace the circuit, and confirm the repair before you pay for it. If a problem is intermittent, we'll tell you what we found and what conditions trigger it, so you can make an informed decision about how to proceed.