Frequently Asked Questions

What is the most common reason for check engine light on a 2012 Acura TL?

• Oxygen sensor failure and catalytic converter issues are frequent causes on V6 engines; both affect emissions and fuel economy.
• Loose or faulty gas cap and evaporative system leaks (EVAP) are common, low-cost fixes that should be checked first.
• Ignition misfires—spark plugs, coils, or fuel injectors—can trigger the light and lead to catalytic damage if ignored.
• Addressing these issues at Nalley Acura often costs less than independent shops while offering factory-trained technicians and OEM parts.
• Warranty-covered repairs must be performed at a certified dealership to preserve coverage and long-term savings.

What does it mean when the check engine light comes on in a 2012 Acura TL?

• The light signals that the vehicle’s onboard diagnostics detected a fault—anything from a minor EVAP leak to a misfire or sensor failure.
• Common triggers include oxygen sensors, catalytic converter efficiency drops, ignition misfires, and fuel system irregularities.
• A stored diagnostic trouble code pinpoints the subsystem; our technicians retrieve and interpret codes with OEM-grade tools for accurate repair planning.
• Prompt dealer diagnostics prevents cascading damage and delivers better long-term value compared with delaying service.
• Remember: repairs covered under warranty must be completed at a certified dealership to remain valid.

What is the first thing to check when the check engine light comes on?

• Start with the simplest checks: confirm the gas cap is tight and inspect for visible fuel or fluid leaks.
• Note any change in performance—rough idle, loss of power, or unusual noises—which helps prioritize diagnosis.
• If the light is flashing, stop driving and contact Nalley Acura immediately; flashing indicates a severe misfire that can damage the catalytic converter.
• Even for non-flashing lights, schedule a dealer scan; our certified service centers use OEM scanners that detect manufacturer-specific codes and pending issues.
• Choosing Nalley Acura can lower immediate repair costs and avoid long-term expenses through correct, warranty-backed repairs.

How much does a check engine light diagnostic cost for a 2012 Acura TL?

• Diagnostics at Nalley Acura typically range from $79 to $149 depending on the depth of testing required; final repair estimates follow the scan.
• We often cost less than many independent shops because our processes focus on accurate diagnosis and using the right OEM parts to avoid repeat visits.
• Immediate savings come from correct-first-time repairs; long-term savings come from warranty protection and reduced risk of major component failure.
• If the issue is covered under warranty, repairs must be completed at a certified dealership to preserve coverage and avoid added out-of-pocket expense.
• Visit our Service Specials or contact our service team to get an exact estimate and available offers.

How long does a check engine light service take?

• Basic diagnostic scans typically take 30–60 minutes; more involved diagnostics or road tests may require additional time.
• Simple repairs like tightening a gas cap or replacing a sensor can often be completed the same day.
• Complex repairs—such as catalytic converter replacement or internal engine work—require written estimates and appointment scheduling to ensure OEM parts availability.
• Nalley Acura’s factory-trained technicians and streamlined service process reduce turnaround time and minimize downtime for you.
• For warranty-covered work, repairs must be performed at a certified dealership; we’ll explain expected timelines and savings up front.