Frequently Asked Questions

What is the most common reason for check engine light on a 2023 Toyota Crown?

• Loose or damaged gas cap — the simplest and most frequent cause that triggers an emissions-related code.
• Faulty oxygen sensor or EVAP leak — common aging or seal failures that affect fuel trim and emissions.
• Spark plugs, ignition coils, or misfires — can cause rough running and elevated emissions if ignored.
• Catalytic converter issues — often a downstream result of prolonged misfires; costly if left unrepaired.
• Bring your Crown to Nalley Toyota of Roswell for accurate diagnosis; dealership service often costs less than independent shops and prevents repeat repairs.

What does it mean when the check engine light comes on in a 2023 Toyota Crown?

• A steady light typically signals a stored diagnostic trouble code related to emissions, sensors, or drivability.
• A flashing light usually indicates an active misfire or condition that can damage the catalytic converter — act immediately.
• Common triggers range from simple EVAP issues to fuel or ignition faults; some are urgent and some are informational.
• Our factory-trained technicians use OEM scanners to identify exact codes and recommend cost-effective repairs that protect long-term value.

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

• Check the gas cap — tighten it and check for visible damage; a loose cap often clears the code after a few drive cycles.
• Look for obvious issues: fuel level, dashboard warnings, strange noises, or loss of power.
• If the light is flashing or the vehicle runs poorly, stop driving and schedule immediate service to avoid further damage.
• For accurate repair and any warranty coverage, have the Crown checked at Nalley Toyota of Roswell by certified technicians.

How much does a check engine light diagnostic cost for a 2023 Toyota Crown?

• Diagnostics at our dealership are competitively priced; many times our precise testing and factory tools save you money versus independent shops by avoiding unnecessary parts and repeat labor.
• Initial scan fees are modest and include code readout, basic inspection, and repair recommendations with itemized estimates.
• If repairs are covered by warranty, they must be performed at a certified dealership to preserve coverage and ensure parts authenticity.
• We focus on immediate savings and long-term value by using OEM parts and factory-trained technicians to reduce return visits.

How long does a check engine light service take?

• Simple inspections and scans can be completed in under an hour; minor repairs like replacing a gas cap or clearing a code are quick.
• Common repairs (oxygen sensors, ignition coils, spark plugs) typically take a few hours depending on parts availability and workload.
• Complex diagnostics or catalytic converter work may require more time; we provide clear estimates and keep you updated throughout the process.
• Choosing Nalley Toyota of Roswell often reduces total downtime because factory diagnostics identify root causes faster, preventing multiple visits and extra expense.