Mercedes Benz

P1513 Idle air control valve P1514 Idle air control valve The diagnostic trouble codes (DTCs) P1513 and P1514 are  generic codes that indicate an issue with the engine's air intake system . However, the specific meaning of these codes varies depending on the vehicle's make, model, and year. They can be related to the Idle Air Control (IAC) valve, Intake Manifold Runner Control (IMRC) system, or the Electronic Throttle Control (ETC).   P1513: Intake Manifold Runner Control (IMRC) Bank 2 Stuck Closed (Example) What it means:  For vehicles like a 1997 Hyundai, this code points to an IMRC system problem. It means the IMRC valve on the second bank of the engine is stuck in the closed position, restricting airflow. The IMRC system adjusts the length of the air intake runners to optimize performance and efficiency at different engine speeds. Common symptoms: Rough or poor idle Hesitation or a lack of power during acceleration Illuminated Check Engine Light Possible causes: Fault...