P0402 Code (Symptoms, Causes, and How to Fix)

P0402 code

Few vehicle-related issues can be quite as maddening as the sudden illumination of a check engine light. Issues of this type arise for a number of reasons, though the vast majority relate to operational or emissions failures. In essence, the onset of a check engine light is a vehicle’s way of calling attention to an … Read more

P0404 Code (Symptoms, Cause, and How to Fix)

P0404 engine code

The exhaust gas regulation (EGR) system enables cars to reduce smog emissions. Besides limiting smog emissions, the EGR is also responsible for controlling the engine temperature as well as the ratio of fuel-to-air. Any component failure in this system can activate the P0404 code. When troubleshooting the P0404 code, it is crucial to be thorough … Read more