First, try turning your car on with a backup key to reset the system. In some cars, the security indicator light blinks to show that your anti-theft system is active, but a steady security light could mean problems with your key fob or car battery. The security light always includes a picture of a car and a key and usually lights up red or gold. Your "check engine" light comes on when your car’s onboard computer (or PCM, Powertrain Control Module) records some kind of problem. This onboard computer runs your car so that it has optimum fuel economy and low emissions. The PCM creates a code indicating what part or system is malfunctioning (electrical system, oxygen sensors, and so on). And what about the bank 1 and “A” camshaft portion of the code? Well, the engine is divided into two banks. The side that has cylinder no. 1 is called Bank 1 while the opposite is referred to as Bank 2. “A” cam is the intake camshaft in a Dual Overhead Cam (DOHC) engine or the intake camshaft for the number one cylinder in a V engine. The check engine light is a small icon with a vehicle’s gauge cluster which illuminates if the vehicle’s ECU, or “Electronic Control Unit”, receives a fault code from one of its sensors, actuators, or systems. This is a function of the On-Board Diagnostics system. Starting in 1996, the EPA mandated that every vehicle sold should have a 1. Loose or bad gas cap. It is possible for the check engine light to come on in Edge due to a loose or bad gas cap. The fuel system in modern vehicles is designed to maintain a certain level of pressure, and if the gas cap is not sealing properly, it can cause a leak and disrupt the pressure balance in the system. 4. Finally, reset the OBD-II system by disconnecting the battery for a few minutes. This will clear any pending codes and turn off the “Service Engine Soon” light. The “service engine soon” light on a Nissan Altima can be reset in two ways. Using a code scanner, which can be found at auto parts stores, is one option. r5vk.

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