Frequently Asked Questions

What is the most common reason for check engine light on a 2023 Acura TLX?

• Common causes include a loose or damaged gas cap, oxygen sensor failure (P0135/P0136), EVAP leaks (P0455), engine misfires (P0300–P0304), and catalytic converter inefficiency (P0420).
• Many of these begin as minor issues but can escalate into expensive repairs if left unaddressed—early diagnosis preserves fuel economy and emissions performance.
• Nalley Acura’s factory-trained technicians identify the root cause quickly and recommend genuine Acura parts, often delivering lower total cost than independent shops because fixes are done right the first time.
• Remember: warranty-covered repairs must be completed at a certified dealership to maintain coverage.

What does it mean when the check engine light comes on in a 2023 Acura TLX?

• A check engine light signals that the vehicle’s onboard diagnostics detected a fault—anything from a minor sensor issue to a serious engine misfire.
• It does not always mean imminent failure, but it does require scanning the car’s OBD-II codes to determine the exact condition and severity.
• Nalley Acura provides precise diagnostics and transparent estimates; our factory-trained technicians use OEM tools to protect long-term reliability and preserve any remaining warranty.
• Prompt dealership diagnosis often costs less overall than repeated work at independent shops, delivering immediate and long-term savings.

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

• Start with the simplest step: ensure the fuel cap is tight and not cracked—this fixes many EVAP-related codes.
• Observe engine behavior: rough idle, loss of power, strong smells, or fluid leaks indicate more urgent issues and may warrant stopping driving.
• Use Nalley Acura’s quick-scan service for a proper code read; our diagnostics identify whether the issue is a simple fix or requires immediate repair.
• If the problem is covered under warranty, repairs must be performed at a certified dealership to retain coverage and avoid future cost exposure.

How much does a check engine light diagnostic cost for a 2023 Acura TLX?

• Diagnostic fees vary, but a typical computerized scan at Nalley Acura is competitively priced and often ranges modestly compared with local rates; diagnostics are applied toward repair if work is performed here.
• Because we use factory tools and genuine parts, many customers realize immediate and long-term savings versus repeated fixes elsewhere.
• If warranty coverage applies, the diagnostic and covered repairs are completed at a certified dealership to preserve your warranty benefits.
• Check current offers at https://www.nalleyacura.com/specials/service.htm or schedule a service appointment online for transparent pricing and fast turnarounds.

How long does a check engine light service take?

• A basic diagnostic scan typically takes 30–90 minutes; straightforward repairs (tightening a gas cap, replacing a sensor) can often be completed the same day.
• Complex repairs—like diagnosing intermittent misfires or replacing a catalytic converter—may require additional time, parts, or overnight work.
• Nalley Acura’s service advisors provide realistic time estimates and prioritize same-day service when possible; factory-trained technicians and OEM parts reduce repeat visits and overall downtime.
• Choosing the dealership often lowers long-term ownership costs by ensuring repairs are correct and warranty-compliant from the start.