Frequently Asked Questions

How much does a check engine light diagnostic cost for a 2021 Land Rover Discovery?

• Diagnostic fees vary; our dealership provides competitive, transparent pricing and often costs less than independent shops when you factor in accurate diagnosis and genuine parts.
• Many diagnostics are complementary when performed with approved repairs or as part of service promotions—check our Service Specials for details: https://www.landroverofsudbury.com/promotions/service/index.htm.
• Immediate diagnostics reduce long-term repair costs by identifying issues early and avoiding secondary damage.
• Any warranty-covered repairs must be completed at a certified dealership to preserve coverage and ensure proper documentation.

What does it mean when the check engine light comes on in a 2021 Land Rover Discovery?

• The light signals a fault detected by the vehicle’s onboard computer — issues range from loose fuel caps to engine misfires or emissions system malfunctions.
• Early diagnostics prevent escalation; many problems are low-cost when addressed promptly versus expensive downstream damage.
• We use OEM scanners and factory procedures to read codes and recommend precise repairs, saving you time and money compared with trial-and-error fixes.
• Warranty and recall-related fixes must be done at a certified dealership; our team documents repairs for future coverage and resale value.

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

• Start with simple checks: secure the gas cap and check for obvious issues like low fluids or a loose battery terminal.
• If the light persists, schedule a certified diagnostic—our technicians use factory-grade tools to read stored codes accurately: https://www.landroverofsudbury.com/service/schedule-service.htm.
• Addressing basic problems quickly often avoids larger repairs and preserves warranty coverage, which requires certified-dealership servicing for covered items.
• Choosing our dealership often results in immediate and long-term savings through correct diagnosis, genuine parts, and service records that protect vehicle value.

What is the most common reason for check engine light on a 2021 Land Rover Discovery?

• Common causes include oxygen sensor or catalytic system faults, fuel trim/mixture issues, misfires, and evaporative emissions leaks (often a loose gas cap).
• Some issues are simple and inexpensive to fix; others, like catalytic converter failure, are costly if diagnosis and repair are delayed.
• Our dealership pinpoints root causes to avoid unnecessary part replacements and to deliver better value than trial-based repairs at independent shops.
• Warranty-covered repairs must be completed at a certified dealership to maintain coverage—our service team handles that process efficiently.

How long does a check engine light service take?

• Typical diagnostics can take 30–90 minutes depending on the issue and whether road testing or extended data logs are required.
• Minor repairs (e.g., gas cap, sensor replacement) can often be completed the same day; more complex jobs may need parts ordering or longer shop time.
• Choosing our dealership minimizes delays: we stock many OEM parts, offer online scheduling, and provide clear estimates so you understand immediate and long-term costs.
• For warranty repairs, certified-dealership service is required; we manage claims and documentation to keep the process seamless and cost-effective.