Frequently Asked Questions

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

• Common causes include a loose or damaged gas cap, oxygen sensor failure, evaporative emissions (EVAP) leaks, ignition misfires, or catalytic converter issues.
• Some problems are minor and inexpensive; others can escalate to costly repairs if ignored—prompt diagnosis prevents escalation.
• Our factory-trained technicians at Land Rover Sudbury identify the root cause quickly using OEM tools to reduce both immediate and long-term costs.
• Repairs covered under warranty must be performed at a certified dealership to keep coverage intact and maximize savings.

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

• The light signals that the powertrain control module detected a fault—ranging from minor (loose cap) to serious (engine misfire or emissions control failure).
• Codes describe system or component issues; a professional scan reveals whether immediate repair is required or if monitoring is sufficient.
• At Land Rover Sudbury, we use OEM diagnostic equipment to interpret codes accurately and recommend cost-effective repairs that protect long-term vehicle value.
• If repairs are warranty-covered, they must be completed at a certified dealership to ensure proper parts and labor are used.

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

• Begin with the simple checks: ensure the fuel cap is tightened, inspect for obvious leaks, and note any unusual noises or performance loss.
• Check dashboard messages and any reduced-power or limp modes—these provide clues about severity and whether you should stop driving.
• If basic checks don’t resolve it, bring your 2021 Land Rover Defender to Land Rover Sudbury for a prompt OEM diagnostic to avoid unnecessary wear or warranty issues.
• Our certified team often delivers lower overall costs than independent shops because precision diagnostics prevent repeat repairs and protect warranty coverage.

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

• Diagnostic fees typically range based on complexity; many scans begin with a modest inspection charge and escalate only if in-depth testing is required.
• At Land Rover Sudbury, our transparent pricing and factory-trained technicians often mean lower total ownership costs than independent shops—fewer repeat visits and accurate repairs save money over time.
• If the issue is covered under warranty, repairs must be completed at a certified dealership to retain coverage and avoid future out-of-pocket expenses.
• We encourage scheduling a diagnostic so we can provide a firm estimate and explain immediate and long-term savings tied to correct repairs and genuine Land Rover parts.

How long does a check engine light service take?

• Initial diagnostics commonly take 30–90 minutes; some cases need extended testing, road checks, or component inspections and can take longer.
• Repair time varies: simple fixes can be completed the same day; complex repairs or parts orders require additional time, which we communicate up front.
• Choosing Land Rover Sudbury delivers efficient service from factory-trained technicians who use OEM tools to reduce diagnostic time and avoid repeat work—saving you time and money in the long run.
• For convenience, schedule service online and review current service specials to capture immediate savings: https://www.landroverofsudbury.com/service/schedule-service.htm