When your vehicle’s check engine light comes on, it’s often followed by a diagnostic trouble code (DTC). These codes are part of the vehicle’s onboard diagnostic (OBD-II) system, which helps identify issues with the engine, transmission, and emissions systems. Understanding what these codes mean can save you time, money, and stress by providing insight into what might be wrong with your car. When you need computer diagnostics and repairs, contact Presto Auto Electric in Carson City, NV. How Diagnostic Codes Work The OBD-II system monitors your vehicle’s performance through a series of sensors. When a sensor detects something out of the ordinary—such as an engine misfire or emissions failure—it triggers the check engine light and records a diagnostic code. Each code corresponds to a specific issue, allowing mechanics (and sometimes even drivers) to pinpoint the problem more easily. Common Diagnostic Codes P0420: Catalyst System Efficiency Below Threshold This indicates a problem with the catalytic converter, which helps control your vehicle’s emissions. A faulty catalytic converter can lead to increased emissions and reduced performance. P0300: Random/Multiple Cylinder Misfire This code signals that your engine is misfiring in more than one cylinder. Causes can range from spark plug issues to fuel delivery problems. P0171: System Too Lean (Bank 1) This means there’s too much air and not enough fuel in the engine’s combustion process, which could be due to a vacuum leak or a failing oxygen sensor. What Should You Do? When you get a diagnostic code, the best approach is to take it to a mechanic who can interpret the data accurately. While some issues are simple to fix—like a loose gas cap that triggers an emissions warning—others may be more complex and require professional tools to diagnose and repair. Ignoring a check engine light or diagnostic code can lead to more serious issues down the line. Addressing problems early ensures that your vehicle runs smoothly, reduces the risk of breakdowns, and saves you money on repairs in the long run. Computer Diagnostics in Carson City At Presto Auto Electric, we use state-of-the-art computer systems to diagnose and repair all sorts of automotive issues. From check engine light repairs to issues with performance and fuel efficiency, our talented staff will get to the bottom of it using highly accurate automotive computer diagnostics. Contact us at (775) 430-4546 for computer diagnostics in Carson City, NV.

Making the most of every gallon is crucial in light of the growing cost of fuel. Beyond driving style, regular car maintenance can greatly increase fuel economy. Below, we go over some important upkeep advice to help you save money at the pump. When it’s time to schedule routine maintenance for your vehicle, contact Presto Auto Electric in Carson City, NV. Regular Oil Changes Maintaining the proper oil quality and doing routine changes will keep your engine operating at peak performance. Fresh oil reduces friction, resulting in improved engine efficiency and higher gas mileage. Maintain Proper Tire Pressure Underinflated tires increase rolling resistance, which increases engine effort and fuel consumption. Maintaining the correct tire pressure levels and doing a monthly check will help your car run more efficiently. Replace Air Filters The engine uses more gasoline when there is less air entering it due to a clogged or dirty air filter. Regular air filter replacement guarantees ideal airflow, which aids in your engine's more efficient fuel burning. Keep the Engine Tuned The proper operation of fuel injectors, spark plugs, and other parts is ensured by routine engine tune-ups. An engine that is tuned properly uses fuel more effectively, increasing total mileage. Check the Fuel System Fuel injectors can clog over time, which lowers their efficiency. Periodically using a fuel system cleaner can help keep injectors clean and guarantee that the engine is receiving the proper fuel-air combination for effective combustion. Monitor Your Brakes Inadequately fitted or worn brakes can create unneeded drag, which makes your engine work harder. You can make sure your brakes aren't causing you to use more gasoline by having them checked and maintained regularly. Lighten the Load Having too much weight in your car makes it use more gasoline. Take stuff out of the backseat or trunk to lighten the weight and increase your gas mileage. Auto Maintenance in Carson City Is your car not running quite right? Are you experiencing decreased fuel economy? These are common signs it's time for a tune-up. During a tune-up, a vehicle may undergo a variety of simple auto maintenance tasks that help restore driveability and efficiency. This can include replacing spark plugs, cleaning the fuel injection system, or installing a new air filter and fuel filter. Call Presto Auto Electric at  (775) 430-4546  to schedule a tune-up in Carson City, NV.