5/3/2023 0 Comments P0505 opel x18xe1![]() ![]() However, PCM’s generally have a rather limited ability to correct or compensate for most faults, and when this limit is reached the PCM will set code P0505 and illuminate a warning light. On most applications, the PCM will attempt to make adjustments to various systems such as fuel trim, ignition timing, injection pulse width and others in attempts to maintain the specified idling speed and quality. ![]() Note that regardless of slight differences in the wording of various definitions of code P0505, this code always refers to the PCM’s inability to maintain or control the engine idling speed. OBD II fault code P0505 is defined as “Idle Control System Malfunction”, or sometimes as “Idle speed control (ISC) system –malfunction”, and is set when the PCM (Powertrain Control Module) is unable to control, or maintain the engine idling speed at a specified RPM. What are the common causes of code P0505?.We recommend Torque Pro Table of Contents Wiring, ISC actuator/IAC valve, throttle motor, throttle valve tight/sticking, ECM Idle speed control (ISC) system -malfunction (Buy Part On Amazon) By Reinier ( Contact Me) Last Updated Automobile Repair Shop Owner Code ![]()
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