Parts-store code readers tell you a code. A real diagnostic tells you why. Replacing the O2 sensor because the code says 'O2 sensor' is how you spend $400 on a part you didn't need. We use professional scan tools, live data, and decades of experience to find the actual cause. Part of the Supercanic network — same diagnostic standards across every location.
We don't just read the P-code. We pull all stored codes, pending codes, freeze-frame data, mode-6 data, and manufacturer-specific codes. Most parts-store readers only show the generic P-code — the real story is in the rest.
When the code set, what was the engine doing? Cold? Hot? Under load? Idling? Freeze-frame tells us the conditions. Then we drive the vehicle while watching live data — fuel trims, sensor readings, ignition timing, MAF/MAP values — to see the failure happen in real time.
If we suspect a vacuum leak, we smoke-test the intake. If we suspect a fuel issue, we test fuel pressure and injector flow. If we suspect ignition, we scope individual coils and check spark plug condition. Every conclusion is backed by a test, not a hunch.
Codes like P0300 (random misfire) can be caused by 20 different things. We narrow it down — bad coil, fouled plug, low compression, vacuum leak, fuel injector, sensor — until we have one answer, not a list of guesses.
We tell you what's wrong, what it'll cost, and what happens if you wait. You get a written diagnosis you can take anywhere — but most of our customers have us do the repair because we've already done the legwork.
After repair we clear codes, drive the vehicle through full drive cycle, and confirm no codes return. If it's a smog-related fix, we make sure all readiness monitors are set before you go to the smog shop.
Standard on most repairs. Parts and labor. If something we touched fails, we fix it again — no charge, no argument. That's how locally-owned shops have to operate.
★ Mon–Sat 7AM–6PM ★ 1685 S State St, San Jacinto, CA ★