What does it mean when the check engine light comes on in a 2014 Toyota 4Runner?

• The onboard computer detected a fault — anything from a loose gas cap to an emission, ignition, or sensor issue.
• Our certified technicians at Larry H. Miller Toyota Peoria perform OEM diagnostics to pinpoint the code and recommend the correct repair.
• Warranty repairs must be completed at a certified dealership; we back work with factory standards and documented service history.

How long does a check engine light service take?

• Diagnostics typically take 30–60 minutes; many repairs (sensors, gas cap, battery-related items) are same-day.
• Complex repairs vary; we give clear estimates and aim for fast turnarounds to reduce downtime.
• To book, please schedule service.

How much does a check engine light diagnostic cost for a 2014 Toyota 4Runner?

• We provide competitive, transparent pricing and written estimates. Because we diagnose correctly the first time with OEM tools, our customers often pay less overall than at independent shops due to avoided repeat repairs.
• We emphasize immediate and long-term savings, and we offer service financing so you can get service now and pay later.
• See current service specials or schedule service.

What is the most common reason for check engine light on a 2014 Toyota 4Runner?

• Common causes are oxygen sensor faults, EVAP leaks, ignition misfires, and loose fuel caps — small issues can quickly become expensive if ignored.
• Early dealership diagnosis preserves fuel economy, towing reliability, and resale value and prevents larger repairs like catalytic converter replacement.

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

• Check the gas cap and basic fluids first; then bring the vehicle for an OBD-II scan so codes are read accurately.
• Do repairs at a certified dealership to maintain warranty coverage; to act now, schedule service and view our service specials.

2014 Toyota 4Runner Check Engine Light Codes

At Larry H. Miller Toyota Peoria we frequently see the same set of codes on the 2014 Toyota 4Runner: P0420 (catalytic converter efficiency), P0171 (system too lean), P0300 (random/multiple misfires), P0455 (EVAP large leak), and oxygen-sensor-related codes. Each code carries different risks and costs if left unaddressed — an EVAP fix or gas cap replacement is minimal, but ignoring a P0420 can result in catalytic converter failure, failed emissions tests, lost fuel economy, and major repair bills. Our factory-trained technicians in Peoria use Toyota-specific scanners to capture freeze-frame data and run tests that independent scanners often miss. That precision lowers total ownership costs by stopping small faults before they cause large failures. We provide clear written estimates, OEM parts, and documented repairs that protect resale value and keep your 4Runner’s towing capability and performance intact. To protect your vehicle and wallet, schedule service and check our service specials.

2014 Toyota 4Runner Check Engine Light Reset

Resetting the check engine light on a 2014 Toyota 4Runner is straightforward with the proper tools, but a simple reset without fixing the root cause can mask problems and prevent required readiness monitors from completing — potentially causing emissions test failures. At Larry H. Miller Toyota Peoria we run a full diagnostic, address the underlying issue with OEM parts, and only clear codes after confirming repairs are successful. This transparent approach preserves long-term performance, avoids repeat visits, and ensures any warranty-covered work remains valid; warranty repairs must be performed at certified dealerships. We document everything and explain the benefits of each repair so you understand immediate and long-term savings. If cost is a concern, ask about our service financing to get repairs now and pay over time. To protect engine health and resale value, schedule service and view current service specials.

Check Engine Light Flashing

A flashing check engine light on a 2014 Toyota 4Runner usually indicates a severe misfire or condition that can quickly damage the catalytic converter. Continued driving with a flashing light risks major engine and emissions system damage, reduced power, and higher fuel consumption. If the light flashes, stop driving when safe and contact Larry H. Miller Toyota Peoria for immediate guidance; our service team can advise whether to tow and will prioritize urgent diagnostics. We offer fast inspections, OEM parts, certified technicians, and transparent estimates that help you avoid compounded costs. Check our service specials for current offers and consider service financing if needed. Protect your investment and get back on the road safely — schedule service online or call our Peoria service center to arrange prompt attention.