<p></p> <img src="https://dcr-apis.s3.us-east-2.amazonaws.com/wp_contents/uploads/DCR-ADMIN/Article_Webp/Dublin-Car-Tek.webp" alt="undefined" style="height: auto;width: auto"/> <p></p> <p>Do you know the #1 reason that <a href="https://www.diamondcertified.org/car-fails-smog-check/" target="_self">cars don’t pass their smog check</a>? According to Diamond Certified smog check experts, a “check engine” / “service engine soon” light ON and/or high tail pipe emissions are the main reasons. The state sets the maximum allowed limits for hydrocarbons, carbon monoxide, oxides of nitrogen, referred to as “NOX”. A worn out catalytic converter can also be one of the many causes for not passing.</p> <p>Each <a href="https://www.diamondcertified.org/guide/questions-to-ask-a-smog-check-facility-in-person/" target="_self">smog check station</a> has its own policy as to whether they charge you for a failure. The state does not regulate that. In general, shops set their own prices for all smog checks, other than the state regulated $8.25 for the Smog Certificate. If your car fails the smog test close to the registration deadline, you may ask DMV for an extension to make failed smog related repairs.</p> <p><a href="https://www.diamondcertified.org/" target="_self">Use Diamond Certified Resource to find top rated companies.</a></p> <p><strong>Local, Top Rated Diamond Certified Companies Related to Your Topic</strong><br><a href="https://www.diamondcertified.org/santa-clara-county-auto-smog/" target="_self">Santa Clara County Smog Shops</a><br><a href="https://www.diamondcertified.org/sonoma-county-auto-smog/" target="_self">Sonoma County Smog Shops</a><br><a href="https://www.diamondcertified.org/auto-smog/ca/alameda-county/" target="_self">Alameda County Smog Shops</a><br><a href="https://www.diamondcertified.org/san-francisco-auto-repair/" target="_self">San Francisco Auto Repair Shops</a><br><a href="https://www.diamondcertified.org/marin-auto-repair/" target="_self">Marin County Auto Repair Shops</a>&nbsp;</p> <p><strong>Related Articles</strong><br><a href="https://www.diamondcertified.org/Guide/Car-Repairs-Maintenance/" target="_self">The Essential Guide to Car Repairs and Maintenance</a><br><a href="https://www.diamondcertified.org/find-expert-advice/" target="_self">Get Expert Advice From Owners of Top Rated Local Companies</a><br><a href="https://www.diamondcertified.org/membership/" target="_self">Become a Diamond Certified Preferred Member (Always Free)</a>&nbsp;</p>