Frequently Asked Questions

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

• Note whether the light is steady or flashing — a flashing light usually indicates a more urgent issue and may require you to stop driving.
• Check the instrument cluster for additional messages or warnings specific to the 2020 Honda Clarity Fuel Cell (hydrogen system alerts can appear separately).
• Look for immediate performance changes: loss of power, unusual noises, or warning indicators for hydrogen or electrical systems.
• Because fuel cell systems are specialized, contact our certified dealership if you see any system warnings — warranty repairs must be performed at a certified dealership.

What does it mean when the check engine light comes on in a 2020 Honda Clarity Fuel Cell?

• A check engine light can indicate anything from a minor sensor fault to an issue with the fuel cell, inverter, or emission-related components unique to hydrogen vehicles.
• Common triggers include sensor malfunctions, electrical faults, or diagnostic trouble codes from the fuel cell control systems.
• Many issues are covered under factory warranty if addressed at a certified dealership — repairs under warranty must be performed here to remain covered.
• Bring your Clarity Fuel Cell to our service center for a complete scan with Honda OEM tools to diagnose the exact cause and avoid escalating costs.

How much does a check engine light diagnostic cost for a 2020 Honda Clarity Fuel Cell?

• Diagnostic fees vary by issue, but our dealership offers competitive, transparent pricing and service specials — many diagnostics start at an affordable service rate.
• If a problem is covered under warranty, diagnostics and required repairs may be covered when performed at our certified dealership.
• Choosing Courtesy Palm Harbor Honda can deliver immediate savings on correct diagnosis and long-term savings by avoiding unnecessary repairs or misdiagnosis common at non-certified shops.
• We provide an itemized estimate before any repair so you understand costs and coverage, and we can discuss finance or special offers if needed.

How long does a check engine light service take?

• Basic diagnostic scans typically take 30–60 minutes, depending on the complexity and whether additional testing is needed.
• If a repair is required, total time depends on parts availability and the nature of the repair — minor sensor fixes may be same-day; complex fuel cell or electrical repairs can take longer.
• We prioritize accurate diagnosis with OEM tools to reduce repeat visits and long-term downtime, delivering better long-term savings than piecemeal fixes.
• For warranty-covered work, repairs must be completed at a certified dealership; we’ll give you a clear timeline once the issue is identified.

What is the most common reason for check engine light on a 2020 Honda Clarity Fuel Cell?

• The most frequent causes are sensor or control module faults — oxygen, temperature, or electrical sensors — which can trigger diagnostic trouble codes on the Clarity Fuel Cell.
• Less common but more serious causes include fuel cell system faults, inverter or motor control issues, or coolant and wiring problems.
• Addressing sensor faults quickly prevents escalation to costly repairs and range impacts; unchecked issues can reduce the vehicle’s 360-mile electric range and performance.
• Bring your Clarity Fuel Cell to our certified service center for a full scan and OEM repair to ensure warranty coverage and optimal long-term value.