Read the fault codes to determine why your check engine light is on. Hundreds of possible problems can trigger the check engine light on a Volkswagen. To narrow down the problem, use the YOUCANIC scanner to read the codes via the OBD-II port. If the vehicle runs and drives fine, but the check engine light stays on, the most likely issue is an EVAP leak. Driving while the check engine light is flashing can lead to serious engine damage and overheating. Engine RPMs are high or unstable at idleĭon’t ignore these symptoms, especially if the check engine is flashing.In addition to the check engine light, you may notice a few more symptoms, such as: Both these parts set engine misfire codes in the ECU, and if more than one coil or spark plug is faulty, it will trigger multiple cylinder misfires, and the check engine starts to flash on and off. The most common problem that triggers the check engine light on Volkswagen vehicles is bad ignition coils and, quite often, faulty spark plugs. It is important to diagnose and repair the issue as soon as possible, as the check engine light can lead to other problems if ignored. We also show you how to troubleshoot the VW check engine light yourself. This guide covers some of the most common problems that trigger the check engine light on a Volkswagen. There could be several reasons why a Volkswagen check engine light stays on, but the most common issue with VWs is failed ignition coils.
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