If a vehicle is being given an OBD II test, an illuminated Malfunction Indicator Light (MIL lamp) is grounds for failing the test. N.B. The Most Common Reasons the Check Engine Light Comes on: A catalytic converter malfunction – It basically converts harmful hydrocarbons and other toxic gases into less toxic gases. You should always investigate the cause. Tire Pressure Monitoring Telltale Light. Is it important to pay attention to the check engine or malfunction lights on your vehicle? Therefore, the engine oil warning lamp may illuminate. Click for detailed information: Check Engine Light Meaning. Internal combustion engines produce very high heat, due to the principle of ignition and the parts that are subject to friction. The purpose of this warning light is to indicate a detected problem with the car and alert the driver about the issue. 1 out of 12. This light comes on when the vehicle is placed in Service Only Mode, as a check to show it is working. The OBD2 system illuminates the light when there is a problem with the car’s engine, transmission or emission control system. If it does not, have the vehicle serviced by your dealer. A check engine light or malfunction indicator lamp (MIL), is a tell-tale that a computerized engine-management system uses to indicate a malfunction. Commonly referred to as idiot lights, they are designed to bring a driver's attention quickly to the dashboard where the indicated problem can be monitored. The OBD2 system can turn the MIL off automatically if the conditions for the problem stop to exist. What Does Tyre Pressure Monitoring Warning Light Mean? The most common case is when the indicator light stays on constantly. This may light up in case of incorrect or non-standard fuel intake, oxygen sensor failure, air flow sensor failure, EGR valve fault, and catalytic converter failure problems. The OBD2 system illuminates the light when there is a problem with the car’s engine, transmission or emission control system. This warning system, which is not available in every vehicle, has been introduced as standard in most of the vehicles sold in recent years. What Does Steering Wheel Warning Light Mean? Why Does The Oil Warning Light Came On? In 2018, stricter MoT rules were introduced meaning that any car undergoing an MoT test with an illuminated engine management light (whether it’s a red or amber warning) would automatically fail. SRS. If you continue to use this site we will assume that you are happy with it. See an authorized Volkswagen dealer or service facility. If the coolant with a significant place in this system is missing, the lamp may show up. Download the software from. | Home In addition, it may be responsible for the lighting of this lamps even if the fuel tank cap remains loose. The indicator light stops flashing after the ENGINE START STOP switch has been turned to ACCESSORY or IGNITION ON mode to indicate that the system has been canceled. | Privacy If this happens this does not mean the EPB has malfunctioned. These lamps communicate with sensors located in different parts of the vehicle and illuminate to warn the driver when there is a different situation than specified by the manufacturers. Because of the oil that loses its lubrication feature, both the oil pump is forced and the smooth lubrication is not ensured where the oil is needed and the friction increases. If you have a OBD-II scantool (for example one with ELM327 chip) and OBD diagnostic software, you can check the reason for the problem yourself. Unfortunately, there is no way to distinguish between them by just looking at the MIL. Glow Plug Warning Light: What does Glow Plug Light Mean? This lamp illuminates in a pressure loss of one or more of the tires. With diagnostic software, you can even reset the MIL yourself. *NOTE: While these might be some of the most common indicators, they may or may not apply to your vehicle. Excessive oxidation of battery terminals, loose battery cables connected to the terminals, alternator failure, alternator belt loosening or aging can cause the battery warning lamp to light. 5 Important Malfunction Indicator Light and Meaning. I tried the "turn to ON three times" but did not get a code in the odometer,just -----. Color: Red Description: As a bulb check, the airbag warning light comes on when the ignition is placed in the ON/RUN or ACC/ON/RUN position for between 4 to 8 seconds.If the airbag warning light stays on or comes on intermittently, there's a fault with the system. The purpose of this warning light is to indicate a detected problem with the car and alert the driver about the issue. The only way to find out what’s wrong with the car is to plug in a OBD2 scantool. POWER STEERING. Torque, engine power and boost pressure added. If indicator lights up while you’re driving, check to ensure that parking brake is not engaged. The system is designed to monitor the engine, exhaust emissions and the automatic transmission. Those will guide you towards the main cause of the problem. Found on the instrument panel of most automobiles, it usually bears the legend engine, check engine, service engine soon, maintenance required, emmiss maint, or a pictogram of an engine—and when illuminated, it is typically an amber or red color. ABS Warning Light: What Does ABS Warning Light Mean? According to Consumer Reports, … It is totally normal for the light to illuminate for a few seconds when you start the engine. Click for detailed information: Tire Pressure Warning Light Meaning, What’s a red gear wit a exclamation point in the middle and the code popped up as u110f. If the battery light comes on, it indicates that there is a … It indicates more serious problem that requires action to be taken; the sooner the better. It is a sign that your vehicle’s engine is misfiring. History codes, in particular, can shed light on why a certain fault may be occurring. Some of the OBD-II issues are relatively small. If the malfunction indicator lamp comes on and stays on while the engine is running, this indicates that there is an OBD II problem and service is required. Every time the OBD system turns on the MIL light, it will also store a Diagnostic Trouble Code (DTC) in the electronic control unit. Have the system checked immediately by your authorized dealer. Dead battery. It is important to clear the Malfunction Indicator Light after fixing the problem. The Malfunction Indicator Light can signal three different types of problems. Click for detailed information: Engine Temperature Warning Light Meaning. These are just a few of the top problems you could be facing when you see that flowing yellow engine: Do this first. Clearing the codes just before the … ABS Warning Light Have the vehicle inspected by your Lexus dealer immediately. Mini Cooper Warning Lights | Mini Cooper Dashboard Symbols and Meaning, Ford Dashboard Warning Light Symbols and Meanings, Honda Dashboard Warning Light Symbols and Meanings, Volkswagen Warning Lights | Volkswagen Dash Light Meanings. A malfunction indicator lamp is used in the dashboard of a vehicle to alert drivers to a potential problem. Editor's note: This post has been updated in March 2020 for accuracy and the latest information. OBDAutoDoctor Pro for Mobile coming soon! Indicates a malfunction in both the ABS and traditional brake system Malfunction Indicator Lamp (MIL) or Check Engine Light Indicates a malfunction in the Engine or Emission Control System Engine Oil Pressure Warning Light AdBlue® System Malfunction – If the half-empty canister appears alongside the Wrench light… | Site map Vehicles with Smart Key System: The indicator light flashes after the engine switch has been turned OFF to indicate that the system is operating.