Frequently Asked Questions

What is the most common reason for check engine light on a 2022 Hyundai NEXO Blue?

• Common triggers include sensor faults (oxygen, pressure, or temperature sensors), emissions-related issues, and control module alerts specific to hydrogen fuel cell systems.
• For the 2022 Hyundai NEXO Blue, air supply or fuel cell performance codes can be frequent causes—these typically affect efficiency and electric range.
• If not addressed, small sensor issues can escalate to larger failures and dramatically increase repair costs and downtime.
• Repairs covered under warranty must be completed at a certified dealership to preserve coverage; our factory-trained technicians handle these specialized systems correctly and efficiently.

What does it mean when the check engine light comes on in a 2022 Hyundai NEXO Blue?

• A steady check engine light signals the vehicle’s diagnostics detected a fault—anything from a minor sensor reading to an emissions or fuel cell system irregularity.
• A flashing light indicates a more serious or active fault that can cause immediate damage or safety concerns and needs prompt attention.
• Because the NEXO uses hydrogen fuel cell technology, certain alerts may relate to stack performance, air management, or sensors unique to fuel cell systems.
• Bring the vehicle to Nalley Hyundai for a professional scan and diagnosis; our specialized equipment and technicians ensure accurate repairs and maintain warranty eligibility.

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

• Start with simple checks: confirm the fuel cell’s air intake isn’t blocked and ensure no obvious warning icons accompany the light.
• Review recent driving conditions—intermittent issues after refueling, rough operation, or recent collisions can hint at the cause.
• Do not reset the light repeatedly; an accurate diagnosis is required to prevent concealed damage and lost warranty protection.
• Schedule a diagnostic at Nalley Hyundai so factory tools and certified technicians can identify the true cause and recommend the most cost-effective, warranty-safe repair.

How much does a check engine light diagnostic cost for a 2022 Hyundai NEXO Blue?

• Diagnostic fees vary, but our dealership offers transparent pricing and service specials—basic scans often start affordably and are frequently covered by current service offers.
• Because we use factory-grade diagnostics, we reduce misdiagnosis and unnecessary parts replacement, creating immediate savings on repairs.
• Long-term savings are realized through correct repairs, preserved warranty coverage, and lower repeat-visit rates compared with non-certified work.
• Remember: any warranty-covered repairs must be performed at a certified dealership like Nalley Hyundai to maintain coverage and ensure safe, compliant service.

How long does a check engine light service take?

• Simple diagnostic scans can take 30–60 minutes; a full inspection and repair timeframe depends on the identified issue and parts availability.
• Minor sensor replacements or software updates are often completed the same day, while more complex fuel cell or emissions repairs may require longer scheduling.
• At Nalley Hyundai we prioritize clear timelines and efficient service, and often complete work faster and more reliably than independent shops because of direct parts access and factory expertise.
• When warranty repairs are involved, prompt certified-service handling prevents escalation and preserves long-term savings and coverage benefits.