What Is a Check Engine Light Diagnosis?
AMPM Automotive • December 18, 2023
CEL Diagnostics for All Makes and Models
Why Is My CEL On?
You’re probably already familiar with the dreaded check engine light. You may get anxious as soon as that genie lamp-looking warning indicator pops up on your dashboard. Whether it’s flashing or steadily illuminated, most motorists feel uncertain and overwhelmed about what to do next.
Your check engine light can switch on for a variety of reasons. This can be something as minor as a loose gas cap. Other culprits behind a flickering CEL include:
Faulty catalytic converters.
Internal engine issues.
Malfunctioning oxygen sensors.
Mass airflow sensor problems.
Damaged spark plugs or ignition coils.
A bad gas tank.
Whatever the reason for your illuminated check engine light, it’s essential to have it inspected by a qualified mechanic.
But don’t panic! Luckily, the check engine light diagnostics experts at AMPM Automotive in Rockville, Maryland, are happy to lend a hand. Keep reading to learn everything you need to know about a check engine light diagnosis.
Check Engine Light Diagnosis 101
Whatever caused your check engine to come on, the automotive repair mechanics at AMPM Automotive in Rockville, Maryland, are here to get to the bottom of it. We use advanced check engine diagnostics equipment that efficiently communicates with your car’s internal computers. This allows us to capture trouble codes that reveal specific problems. Once we receive the trouble code, we can pinpoint the root cause of your flickering CEL. This allows us to accurately identify the problem and repair it properly, saving you time and money.
If your check engine light is on, don’t wait. It could indicate a potentially serious problem with your car. Call our mechanics to book your check engine light diagnostics appointment. We can be reached at
301-200-8931
and are conveniently located at
11800 Coakley Cir Rockville, MD 20852
.
We’ll Put Your Check Engine Light Worries to Rest
If your CEL is on, call the auto repair technicians at AMPM Automotive in Rockville, Maryland, today. Since 2010, we have been delivering quality, dependable car care solutions to Montgomery County motorists at affordable rates. We also offer 24/7 towing and no-hassle warranties. If your check engine light is on, call us now at
301-200-8931
to schedule an appointment. We’ll diagnose the underlying issue, make the necessary repairs, and get you back on the road in no time at all.
Contact AMPM Automotive in Rockville, Maryland, for all your auto repairs and maintenance needs. We look forward to chatting with you soon!

Keep Your Electric Vehicle Running Smoothly with AMPM Automotive As electric vehicles (EVs) surge in popularity across Rockville, MD, and beyond, understanding their maintenance needs is key to ensuring they perform at their best. Unlike traditional gas-powered vehicles, EVs have fewer moving parts and don’t require oil changes or tune-ups, which means lower maintenance costs and fewer trips to the shop. However, they still need regular care to maintain safety, efficiency, and longevity. At AMPM Automotive, we’re proud to offer expert EV maintenance services to keep your electric vehicle in top condition. Here’s what you need to know about maintaining your EV and why AMPM Automotive is your trusted partner in Rockville. The Benefits of EV Maintenance EVs are designed with simplicity in mind, eliminating many of the components found in internal combustion engine (ICE) vehicles, such as spark plugs, oil filters, and transmissions. This results in fewer maintenance tasks and significant cost savings over time. Research suggests EV owners spend roughly one-third of what ICE vehicle owners do on regular maintenance (MYEV.com). Additionally, EVs use regenerative braking, which reduces wear on brake pads, further extending their lifespan. Despite these advantages, regular maintenance is still essential to ensure your vehicle’s warranty remains valid and to prevent unexpected issues. Common EV Maintenance Tasks While EVs require less frequent maintenance, several key tasks are necessary to keep them running smoothly. Here’s a breakdown of the most common maintenance needs: Tire Maintenance : Properly inflated tires improve your EV’s range and safety. Regular tire rotations and inspections for wear are crucial, especially since EVs can be heavier due to their batteries, which may affect tire longevity. Brake Inspections : Regenerative braking reduces wear on traditional brakes, but they still need periodic checks to ensure they function correctly. A trained technician can assess brake pad condition and fluid levels. Coolant Checks : Many EVs use coolant to regulate battery temperature. Checking coolant levels and condition as per the manufacturer’s guidelines is essential to prevent overheating and maintain battery health. Cabin Air Filter Replacement : Like ICE vehicles, EVs have cabin air filters that need periodic replacement to ensure clean air inside the vehicle, typically every 20,000 miles or two years. Battery Health Monitoring : EV batteries are sealed and don’t require direct maintenance, but monitoring their health through diagnostic systems is vital. Most manufacturers offer 8-year/100,000-mile warranties for EV batteries, ensuring long-term reliability (Alternative Fuels Data Center). Software Updates : EVs often receive over-the-air software updates to enhance performance, range, and features. Keeping your vehicle’s software current is a simple yet critical maintenance task. Why AMPM Automotive is Your Go-To for EV Maintenance At AMPM Automotive, we’re equipped to handle the unique maintenance needs of electric and hybrid vehicles. Located at 11800 Coakley Circle, Rockville, MD, our shop has been serving the community since 2010, earning over 4,444 positive reviews and ratings of 4.7-4.9 stars on platforms like SureCritic and CARFAX (AMPM Automotive Reviews). Our certified technicians are trained to perform EV-specific diagnostics and repairs, using advanced tools to ensure precision and reliability. As a TechNet Professional Automotive Service facility, we back our work with a 24-month/24,000-mile warranty, giving you peace of mind with every visit. Whether you need a routine tire rotation, a brake inspection, or advanced battery diagnostics, we’re here to keep your EV running smoothly. We proudly serve Rockville and nearby areas, including Bethesda, Gaithersburg, Germantown, Potomac, and Silver Spring. Book your appointment today at AMPM Automotive and experience our commitment to quality and customer satisfaction. Practical Tips for EV Owners To maximize your EV’s performance and lifespan, consider these tips: Optimize Charging Habits : Avoid letting your battery drop below 20% regularly, as this can impact long-term battery health. Aim to keep your charge between 20% and 80% for daily use to reduce stress on the battery. Use Genuine Parts : When replacements are needed, opt for manufacturer-recommended parts to ensure compatibility and maintain your vehicle’s performance. Adhere to Maintenance Schedules : Follow the maintenance schedule outlined in your owner’s manual to keep your warranty valid and your EV in peak condition. Plan for Range Variations : Be mindful of your vehicle’s range, especially in extreme weather, which can affect battery performance. Plan trips accordingly to avoid running low on charge. Conclusion: Trust AMPM Automotive for Your EV Maintenance Needs While EVs require less maintenance than traditional vehicles, regular care is essential to ensure safety, efficiency, and longevity. From tire maintenance to battery health checks, AMPM Automotive in Rockville, MD, is your trusted partner for all your EV maintenance needs. Our experienced team, state-of-the-art equipment, and dedication to customer satisfaction make us the go-to choice for EV owners in the area. Don’t wait—schedule your EV maintenance appointment with AMPM Automotive today and keep your electric vehicle running at its best for years to come!

1. Regular Oil Changes Why it matters: Oil lubricates the moving parts of your engine, reducing wear and tear. Over time, oil breaks down and gets dirty, which can strain your engine. How often: Typically, you should change your oil every 5,000 to 7,500 miles, but check your vehicle's manual as some newer cars might go up to 10,000 miles between changes. At AMPM Automotive: We use high-quality oils and filters to ensure your engine is in top condition. Book an appointment for your next oil change! 2. Check Your Tire Pressure Why it matters: Incorrect tire pressure can lead to poor fuel efficiency, uneven tire wear, and compromised safety. How often: Check your tire pressure at least once a month and before long trips. The correct pressure is usually found on a sticker inside the driver's door or in the car manual. At AMPM Automotive: We offer free tire pressure checks with any service to ensure your ride is safe and smooth. 3. Replace Air Filters Why it matters: A clean air filter ensures that your engine gets enough air for optimal combustion, which impacts performance and fuel economy. How often: Air filters should generally be replaced every 12,000 to 15,000 miles, but this can vary based on driving conditions. At AMPM Automotive: We check and replace air filters during routine maintenance to keep your engine breathing freely. 4. Battery Maintenance Why it matters: A failing battery can leave you stranded. Regular checks can extend battery life and prevent sudden breakdowns. How often: Inspect your battery every six months. Look for corrosion, loose connections, or signs of wear. At AMPM Automotive: We provide battery testing and replacement services to keep you powered up on the road. 5. Brake System Checks Why it matters: Your brakes are crucial for safety. Wear and tear can lead to reduced stopping power. How often: Have your brakes inspected at least once a year or if you notice any changes in braking performance. At AMPM Automotive: Our expert technicians will ensure your brakes are in top shape, providing peace of mind with every brake service. Conclusion Maintaining your car doesn't have to be a chore; it's about ensuring your safety and the longevity of your vehicle. Here at AMPM Automotive, we're committed to helping you keep your car in prime condition. If you have any questions about car maintenance or need to schedule a service, feel free to reach out to us. Safe driving!
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