Frequently Asked Questions

What does it mean when the check engine light comes on in a 2016 BMW M2?

• It signals that the vehicle’s onboard diagnostic system detected an issue — from simple sensor drift to catalytic converter or ignition problems. Our factory-trained technicians at Nalley BMW of Decatur use OEM diagnostic tools to identify the exact code and cause quickly.
• Common findings include loose gas caps, oxygen sensor faults, misfires, and emissions system failures. Addressing codes early often prevents more costly repairs and preserves long-term performance and resale value.
• We routinely find that a certified dealership provides better value: our transparent estimates, OEM parts, and warranty-backed repairs often cost less over time than repeated visits elsewhere.
• Warranty-covered repairs must be completed at a certified dealership to maintain coverage. We also offer service financing so you can get necessary repairs now and pay later.
• Ready to proceed? You can schedule service online or check our current service specials before you come in.

How long does a check engine light service take?

• Diagnostic time is often about 30–90 minutes for most check engine light scans on a 2016 BMW M2, depending on the complexity of the code and whether road testing is required.
• If follow-up repairs are needed, we provide a clear estimate and timeline. Many common fixes are completed the same day thanks to our certified technicians and well-stocked OEM parts inventory at Nalley BMW of Decatur.
• Quick turnarounds reduce downtime and help protect your vehicle’s performance and safety. When you arrive, ask about our loaner options, courtesy transportation, and comfortable customer lounge.
• To get started, schedule appointment online — you’ll receive an estimated time and transparent pricing up front.

How much does a check engine light diagnostic cost for a 2016 BMW M2?

• Diagnostic pricing varies by issue, but Nalley BMW of Decatur provides clear, competitive rates with a focus on long-term savings. Our dealership often costs less than independent shops when you factor in OEM parts, accurate diagnostics, and warranty protection.
• We emphasize immediate and long-term value: an accurate dealership diagnosis prevents unnecessary parts replacement, reduces repeat labor, and protects factory warranty coverage.
• If cost is a concern, ask about our current service specials and service financing options so you can get the work done now and pay later.

What is the most common reason for check engine light on a 2016 BMW M2?

• Common reasons include oxygen sensor faults, ignition misfires, catalytic converter issues, or turbocharger-related sensor readings — all possible on high-performance engines like the inline 6 turbo in the 2016 BMW M2.
• Ignoring these issues can lead to reduced fuel economy, higher emissions, or more expensive repairs such as turbocharger or catalytic converter replacement. Early diagnosis at Nalley BMW of Decatur saves money and maintains peak performance.
• Our technicians use factory diagnostic software specific to BMW to identify root causes quickly and recommend OEM repairs that protect the vehicle’s longevity and warranty.

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

• Start with the basics: secure the gas cap, note any drivability changes, and check for display messages. Then bring your 2016 BMW M2 to Nalley BMW of Decatur for a full scan — our tools read OEM codes and live data for precise diagnosis.
• Using OEM diagnostic equipment avoids guesswork and prevents unnecessary parts replacement. If your vehicle is under warranty, repairs must be performed at a certified dealership to remain covered.
• We recommend you schedule service promptly. If cost is a concern, explore our service specials and service financing to keep your M2 running like new.