Frequently Asked Questions

What is the most common reason for check engine light on a 2016 Lexus CT 200h?

• Often caused by oxygen sensor faults, EVAP leaks (loose fuel cap or purge valve), or occasional cylinder misfires.
• Minor issues like a loose gas cap can trigger the light but are inexpensive to correct.
• Left unaddressed, small problems may damage the catalytic converter and significantly raise repair costs.
• Nalley Lexus Roswell uses factory diagnostics to pinpoint the true cause quickly, reducing unnecessary parts replacement.
• Warranty-covered repairs must be performed at a certified dealership to preserve coverage and maximize long-term savings.

What does it mean when the check engine light comes on in a 2016 Lexus CT 200h?

• It indicates the vehicle’s onboard computer detected a fault—anything from emissions issues to engine misfires.
• Not all illuminations are emergencies, but the code should be scanned to determine severity and prevent escalation.
• Our factory-trained technicians perform a full scan with Lexus diagnostics to identify root causes, often saving you money over repeat independent repairs.
• If a repair is covered by warranty, it must be completed at a certified dealership to retain coverage and obtain genuine parts.

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

• Check for obvious items: a loose or missing gas cap, abnormal noises, or fluid leaks under the car.
• Note driving behavior—reduced power, stalling, or strange vibrations—and relay that to service staff.
• If the light is flashing, stop driving and have the vehicle towed to the dealership to avoid further damage.
• Bring your CT 200h to Nalley Lexus Roswell so factory tools and technicians can diagnose and repair properly; warranty repairs must be done at a certified dealer.

How much does a check engine light diagnostic cost for a 2016 Lexus CT 200h?

• Diagnostics at our dealership typically run in a standard range, often around $95–$150 depending on inspection depth and tests required.
• We frequently waive or credit the diagnostic fee when you authorize covered repairs at our service center.
• Nalley Lexus Roswell often costs less than independent shops when you factor in accurate diagnosis, OEM parts, and warranty protection.
• Remember: repairs covered under warranty must be performed at a certified dealership to preserve coverage and long-term savings.

How long does a check engine light service take?

• Initial scan and code reading usually take 30–60 minutes; some shops complete basic fixes the same day.
• Repairs vary—simple items (gas cap, sensor) can be same-day; complex repairs (catalytic converter, engine work) may take one to several days pending parts.
• Nalley Lexus Roswell schedules work efficiently with factory tools and parts to minimize downtime and often delivers faster, more reliable results than repeat visits to independents.
• If covered by warranty, repairs must be done at a certified dealership to maintain protection and ensure long-term savings.