2014 Hyundai Elantra Coupe Check Engine Light

Certified technicians, only the experts.

Frequently Asked Questions

What is the most common reason for check engine light on a 2014 Hyundai Elantra Coupe?

Faulty oxygen (O2) sensors, MAF sensors, or ignition misfires are typical causes and trigger emissions-related codes.
Small issues left unaddressed can escalate—an O2 sensor fault may lead to poor fuel economy and catalytic converter damage.
Nalley Hyundai’s factory-trained technicians identify root causes to avoid unnecessary repairs and preserve long-term value.
Repairs covered by warranty must be performed at a certified dealership to maintain coverage and ensure genuine parts.

How long does a check engine light service take?

Initial diagnostic scanning typically takes 30–60 minutes to read codes and assess symptoms.
Minor fixes such as a loose gas cap or sensor replacement can often be completed the same day.
Complex repairs that require parts or deeper troubleshooting may take a few hours to a day; we provide clear time estimates up front.
Choosing Nalley Hyundai often saves time and money in the long run—our technicians source OEM parts fast and reduce repeat visits.

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

Confirm the light status: steady versus flashing—flashing usually signals a serious fault like an engine misfire.
Check the gas cap first; a loose or damaged cap is a common and simple cause of codes.
Look for obvious signs: low oil, unusual noises, or smoke—if present, stop driving and contact us immediately.
If no obvious issue is found, bring the vehicle to Nalley Hyundai for a diagnostic scan so repairs under warranty are done by certified technicians.

How much does a check engine light diagnostic cost for a 2014 Hyundai Elantra Coupe?

Diagnostic scan fees vary; many dealers, including Nalley Hyundai, offer competitive flat-rate scans—ask about current service specials.
Because we use OEM tools and factory-trained technicians, our upfront diagnostic fee often leads to lower overall repair costs versus repeated independent attempts.
Immediate savings come from accurate diagnosis and proper parts; long-term savings come from avoiding collateral damage that raises repair costs.
Remember: any warranty-covered repairs must be completed at a certified dealership to remain valid, ensuring true long-term protection.

What does it mean when the check engine light comes on in a 2014 Hyundai Elantra Coupe?

It means the onboard computer detected a fault in emissions, engine, or transmission systems and stored a diagnostic trouble code (DTC).
The code indicates a system or sensor that needs attention—some issues are minor, others can affect drivability or cause damage.
Immediate scanning pinpoints the code and severity; Nalley Hyundai provides precise diagnostics and transparent repair plans.
For warranty-covered issues, repairs must be performed at a certified dealership to protect your coverage and the vehicle’s resale value.

2014 Hyundai Elantra Coupe Check Engine Light Reset

Resetting the check engine light on a 2014 Hyundai Elantra Coupe can be done with an OBD-II scanner or by performing the required repair and clearing codes. Simply clearing codes without resolving the root cause is temporary and the light will return. At Nalley Hyundai, we recommend a complete diagnostic and repair so the underlying issue is fixed—this preserves warranty coverage and reduces long-term costs. Our factory-trained technicians use OEM tools to ensure the reset is valid and permanent when the fault is repaired. For warranty repairs, work must be completed at a certified dealership; we also offer service specials and quick parts access to minimize downtime.

2014 Hyundai Elantra Coupe Check Engine Light Flashing

A flashing check engine light on a 2014 Hyundai Elantra Coupe usually signals an active engine misfire that allows unburned fuel into the exhaust, risking catalytic converter damage and poor drivability. If you see a flashing light, reduce speed and avoid heavy load; do not ignore it or continue long-distance driving. Bring the vehicle to Nalley Hyundai immediately for inspection—our team prioritizes flashing-light cases to prevent more costly repairs. We provide accurate diagnostics, OEM parts, and factory-trained technicians who often deliver lower overall costs than independent shops because we identify and fix root causes efficiently and protect warranty eligibility.

2014 Hyundai Elantra Coupe Check Engine Light Codes

Common check engine codes for a 2014 Hyundai Elantra Coupe include P0300 (random/ multiple misfires), P0420 (catalyst efficiency), P0171/P0174 (lean condition), P0135 (O2 sensor heater), and P0101 (MAF sensor). Ignoring these codes can cause decreased fuel economy, poor performance, and severe component damage—P0420 left unresolved can lead to catalytic converter failure ($1,000–$2,500). O2 or MAF sensor replacements are typically $150–$400; ignition or coil repairs vary from $100 to $1,000 depending on scope. Nalley Hyundai focuses on accurate diagnosis to avoid unnecessary parts replacement, delivering immediate and long-term savings with OEM parts and certified service.

For service appointments, specials, or trade inquiries visit our service specials and inventory pages: Service Specials, Used Inventory, New Inventory, or contact Nalley Hyundai in GA at nalleyhyundai.com.