Frequently Asked Questions

What is the most common reason for check engine light on a 2013 Toyota Prius Plug-in?

• Common triggers include a loose gas cap, faulty oxygen sensor, or catalytic converter efficiency decline—each affects emissions and fuel economy.
• Small issues left unchecked can escalate: an O2 sensor failure can lead to poor fuel economy and higher emissions; a bad catalytic converter is costly to replace.
• Our dealership offers factory-trained technicians who diagnose the root cause quickly, preserving long-term value and often costing less than independent shops over time.
• Repairs covered under warranty must be performed at a certified dealership to remain valid; we handle those claims and use OEM parts.

What does it mean when the check engine light comes on in a 2013 Toyota Prius Plug-in?

• It signals the vehicle’s onboard diagnostics detected an emission, engine, or hybrid-system fault; severity ranges from minor to critical.
• Some codes point to emissions systems or sensors; others indicate misfires or hybrid system issues that can affect safety and performance.
• Our certified team uses factory diagnostics to pinpoint the cause, preventing unnecessary repairs and delivering immediate and long-term savings compared with repeat fixes.
• If a repair is covered by warranty, it must be completed at a certified dealership to preserve coverage—our service team handles those requirements.

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

• Check the gas cap: a loose or damaged cap is a common, simple cause that can trigger an emissions-related code.
• If the cap is secure and the light remains, bring the vehicle in for a diagnostic scan so we can read codes and assess hybrid-specific systems.
• Addressing issues early at our dealership often costs less than delayed repairs and helps avoid secondary damage—saving money over the vehicle’s life.
• Warranty-covered repairs must be performed by a certified dealership; our technicians are factory-trained and experienced with Prius Plug-in systems.

How much does a check engine light diagnostic cost for a 2013 Toyota Prius Plug-in?

• Diagnostic prices vary, but our dealership provides transparent pricing and accurate scans using Toyota factory tools to find the exact cause.
• Because we diagnose correctly up front, customers often save immediately and long term versus repeat attempts elsewhere—reducing unnecessary part replacements.
• If the repair is covered by warranty, the diagnostic may be included; warranty repairs must be completed at a certified dealership to remain valid.
• Ask about our current service offers and specials for additional savings and quick scheduling with factory-trained technicians at Nalley Toyota of Roswell.

How long does a check engine light service take?

• Time depends on the fault: a simple gas cap check or sensor replacement can be under an hour; complex hybrid or catalytic issues need more time for diagnosis and repair.
• We use factory diagnostic tools to speed accurate diagnosis, reducing back-and-forth and saving you time and money overall.
• Our service team will provide an estimate and timeline up front; we often complete work faster and more efficiently than independent shops thanks to OEM tools and training.
• Warranty repairs must be done at a certified dealership—doing so protects coverage and avoids future costs tied to improper work.