TX Inspection Rejections · Mobile Diagnostics · Hill Country
A Texas inspection rejection is the one car problem with a deadline attached — and the one drivers get billed the worst for, because a red slip plus a short window is a parts-counter's best day. Each failure below gets the same honest treatment as our symptom guide: what the rejection actually proves, what a parts-changer will sell you, and the test that settles it — before the clock starts mattering.
The official rules live with Texas DPS (safety inspection program) and TCEQ (emissions testing) — we name your rejected item and the fix behind it; they own the paperwork.
A loose, cracked, or missing gas cap — the cheapest inspection failure in Texas, and free to rule out first
A running misfire you can half-feel at idle — raw fuel walks straight through the cat and lights up the HC reading
A recent code clear or battery disconnect — the most common reason by far (the computer forgot everything)
Burned stop-lamp bulbs or corroded sockets — chronic on trucks and anything that lives outdoors
Bulbs and filaments — vibration kills them, especially on ranch and gravel-road vehicles
Tread under 2/32 or mismatched sizes/axles — often unevenly worn from alignment or a sagging spring
No — and this is where drivers lose both time and money. The OBD check reads whether the car's readiness monitors have completed, which takes days of normal driving after a clear, so a freshly cleared car fails as 'not ready.' And if the fault is real, the light returns before or right after the re-check. The cheap path is one flat diagnosis that names the fault before anyone clears codes or buys parts.
The rejection slip states your repair window before a re-inspection is owed — and remember the registration deadline can land regardless of where the repair stands. Inspection rules are administered through Texas DPS and the emissions test through TCEQ; for the fine print (windows, fees, county boundaries) we always point at the official sources. What we control: getting you a named root cause in one visit, typically same or next day.
No — we are deliberately the OTHER phone call. An inspection station can't fix what it rejects, and a repair shop profits from what it finds. We diagnose the failure in your driveway, hand you a written report naming the root cause and the repair path, and you take it wherever you want — including back to the station for the re-check.
Flat $150 for the full mobile diagnostic (all-module scan, live data, the confirming test, written report) plus the $35 trip fee inside 25 miles of Canyon Lake. Already hold a repair quote you don't trust? The second-opinion review of another shop's diagnosis is a flat $95. If we can't find the root cause, you don't pay the diagnostic fee. Period.
Rejection slip in hand? A flat $150 mobile diagnostic names the exact fault behind it — in your driveway, anywhere between Canyon Lake, San Antonio & Austin — and you get a report like this sample before anyone quotes a part.
Book a DiagnosticDifferent problem — is the car itself safe to drive while you sort this? Run the 30-second safe-to-drive check first.