What is broken with the P0507 fault code?
2 Answers
P0507 fault code: It means the idle air control system engine speed is higher than the expected value. Possible causes include air leakage after the throttle body, IAC control circuit failure, IAC solenoid valve failure, throttle valve control module failure, electronic control module (PCM or ECM) failure, vehicle speed sensor failure, etc. The solutions are: 1. Check if the throttle is too dirty, then read the working data stream of the throttle position sensor and intake pressure sensor, and clean or replace the throttle. 2. If certain sensors have failed, it may cause the engine to malfunction. The sensors need to be replaced.
Fault code P0507 indicates excessively high idle speed, which is quite common in vehicles. My car had this issue before, where the idle speed kept surging above 1500 RPM, causing noticeable shaking and a sharp increase in fuel consumption while driving. The root cause is usually carbon buildup or dirt in the idle air control valve, which regulates the air intake. If the valve gets stuck or responds sluggishly, the ECU can't control the idle speed, leading to excessively high RPM. Other possible factors include air intake system leaks, a faulty throttle position sensor, or incorrect ECU module settings. When I dealt with it, I used a professional scanner to confirm the fault code, then removed and thoroughly cleaned the idle valve, restoring normal operation. If a beginner encounters this issue, don't attempt DIY fixes—it's best to visit a repair shop for inspection. Severe carbon buildup may require valve replacement, costing a few hundred to a thousand yuan. Ignoring the problem can lead to unstable engine performance, excessive emissions, and overall performance degradation, but regular engine maintenance can prevent most of these issues.
