![]() Wondering how much it costs for a Volkswagen check engine light diagnosis? If you’re driving and notice your check engine light is flashing, you should stop driving immediately. If the blinking check engine light is accompanied by vibration, reduced engine performance, or unusual noises, have your car towed to a service center as soon as you can. Generally, a blinking check engine light indicates something more serious. For example, if the issue is tied to your EPC system (Electronic Power Control), the EPC system light should also activate. It’s also worth checking if any other dashboard lights activate to help narrow down the problem. It’s best to play it safe and take your vehicle to a service center for a scheduled service, especially with the complexity involved in working on new vehicles. The cause could be anything, from a loose gas cap to a pending oil change. If your VW check engine light is permanently on, it suggests a persistent issue with your engine or ignition system. If you can’t diagnose the problem, it’s important to schedule service at your nearest service center as soon as possible. The best bet here is to check if the gas cap is securely fastened, or if you have an OBD-II scanner, you could scan the code to get more information. You may have a dirty or damaged sensor or a loose spark plug wire.ĭiagnosing the issue can be challenging if the light doesn’t activate every time you drive your Volkswagen. This could indicate that the problem is intermittent. Let’s take a closer look at what that could mean. However, it can appear intermittently or flash as well. In most cases, the VW check engine light should come on as a solid light on your dashboard. What to Do If Your Volkswagen Check Engine Light Turns On? Next, let’s see what you should do if the check engine light activates. When this is damaged or faulty, it can cause the engine to run rich or lean, throwing up a check engine light. The throttle body controls the amount of air allowed into the engine based on driver input, such as acceleration. ![]() A faulty ignition coil may send the incorrect voltage to the spark plug, leading to misfires and an active check engine light. The ignition coil transforms the battery’s low-voltage electrical current into a high-voltage current to ignite the fuel in the engine. Ignoring a faulty sensor will also affect your fuel economy. If the MAF is damaged, it may send incorrect readings to the engine computer, causing a misfire and activating the check engine light. The mass airflow sensor (MAF) measures the air flowing into the intake manifold to ensure the right amount of air enters the engine for combustion. This will not only trigger the engine warning light but also impact engine performance. However, a defective thermostat can prevent adequate coolant flow, causing the engine to reach dangerously high temperature levels. Your Volkswagen’s thermostat controls the flow of coolant to the engine, preventing the engine from overheating. A faulty spark plug may cause your engine to misfire, leading to the check engine warning light switching on. It’s the job of each spark plug to ignite the air-fuel mixture inside the combustion chamber. A faulty catalytic converter can overheat and increase your vehicle’s emissions, triggering a check engine light. The catalytic converter reduces the emissions your car produces by converting the harmful pollutants into less toxic gases. A faulty oxygen sensor can send inaccurate readings to the engine computer, causing the check engine light to activate. The oxygen sensor oversees the amount of oxygen in the exhaust gas. Your gas cap is responsible for keeping the fuel tank sealed, preventing fumes from escaping and any debris from landing in your fuel tank. The leaking vapors will reduce your fuel pressure and can result in a check engine light. ![]() If you notice a check engine light, there’s a very good chance it’s simply a loose gas cap. Whether you’re driving the new Golf R, Volkswagen Jetta, VW Atlas, VW CPO, or any other Volkswagen vehicle, the dashboard lights are there to let you know how your car is performing.Īlthough there are tons of reasons why your VW check engine light may activate, here are a few common ones: 1. What Causes the Volkswagen Check Engine Light to Turn On? ![]()
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