Frequently Asked Questions

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

• Check the gas cap for tightness and visible damage — a loose or cracked cap is a common trigger and an easy fix.
• Look for immediate symptoms: unusual noises, loss of power, or dashboard messages. Note them for the technician.
• If the light is flashing, stop driving and have the vehicle inspected right away to avoid further damage.
• Schedule a diagnostic with Toyota of Greenville; our factory-trained technicians can confirm the issue and preserve warranty coverage.
• Choosing our dealership often costs less than independent shops over time because we combine accurate diagnostics, genuine parts, and long-term reliability.

How long does a check engine light service take?

• Initial scan and diagnosis typically take 30–90 minutes, depending on stored codes and required tests.
• Simple fixes like tightening a gas cap or replacing a sensor can be completed the same day.
• Complex repairs — catalytic converter, hybrid system work, or parts ordering — can add hours or days; we’ll provide an accurate timeline up front.
• Because Toyota of Greenville stocks many OEM parts and has factory-trained techs, turnaround is faster and often less costly than independent shops.
• Remember: any repairs covered under warranty must be performed at a certified dealership to keep coverage valid.

What is the most common reason for check engine light on a 2026 Toyota Prius?

• Loose or faulty gas cap and evaporative emissions leaks are frequent triggers and simple to correct.
• Oxygen sensors and emissions-related components (including catalytic converter efficiency) commonly set codes if they age or fail.
• Hybrid-specific sensors, battery control modules, or excess emissions from misfires can also illuminate the light on a Prius.
• We recommend diagnostics at Toyota of Greenville so factory-trained technicians can identify Prius-specific causes and apply accurate repairs.
• Our dealership often delivers lower overall cost by preventing repeat failures and protecting vehicle value and warranty coverage.

What does it mean when the check engine light comes on in a 2026 Toyota Prius?

• The light indicates the vehicle’s onboard diagnostics detected an emissions, engine, or hybrid-system fault that requires attention.
• It can range from minor issues (evap leak, sensor fault) to serious concerns (misfire, hybrid battery or inverter fault) requiring immediate service.
• A steady light usually means a fault is present but not immediately catastrophic; a flashing light signals severe misfire risk and needs prompt inspection.
• Bring your Prius to Toyota of Greenville for precise diagnostics, OEM parts, and repairs that protect long-term value and warranty eligibility.
• Using our dealership often saves you money over time by addressing root causes correctly the first time and avoiding repeat visits.

How much does a check engine light diagnostic cost for a 2026 Toyota Prius?

• Diagnostic scan fees typically range from about $80–$150, depending on tests required; many dealerships waive the fee with completed repairs.
• Common repair cost ranges: oxygen sensor replacement $200–$400, spark plugs/coils $150–$400, catalytic converter repair $800–$2,000, hybrid module or battery diagnostics and repairs can be higher.
• Delaying repairs can increase costs due to collateral damage, reduced fuel economy, or failed emissions tests.
• Toyota of Greenville’s factory-trained technicians, OEM parts, and efficient parts supply often produce immediate and long-term savings compared with repeated independent repairs.
• Remember: warranty-covered repairs must be performed at a certified dealership to maintain coverage and ensure proper documentation.