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P0507 P0xxx · 动力总成（P） 中严重度
Idle Control System RPM Higher Than Expected
The engine idles above the target speed and the ECU cannot bring it down. Either extra air is getting in, or the throttle is not closing as commanded.
严重程度说明： 中——已影响行驶或排放，请本周内安排检修
你会注意到的故障现象
- High idle
- Engine racing between gear changes
- Poor fuel economy
- Hard to select gear smoothly
常见原因
按可能性从高到低排列——从最上面开始查。
- 1 Vacuum leak after the throttle body
- 2 Dirty throttle body holding the plate open
- 3 Failed idle control valve
- 4 Stuck accelerator pedal or cable
- 5 Intake manifold gasket leak
如何排查
先做花钱最少、侵入最小的检查——大多数这类码不是零件问题。
- ✓ Check for unmetered air with a smoke test — this is the fastest route.
- ✓ Inspect and clean the throttle body bore and plate edges.
- ✓ Watch the commanded vs actual throttle position in live data.
- ✓ Confirm the throttle learns correctly after cleaning (relearn procedure).
维修方案
- Repair the vacuum leak
- Clean the throttle body and perform the relearn
- Replace the idle control valve
P0507 —— 常见问题
Why did it start after I cleaned the throttle? +
Cleaning removes the carbon the ECU had adapted to. Run the throttle relearn so the plate position matches the new airflow.
Is a high idle harmful? +
It wastes fuel and makes gear engagement harsh. Over time it also wears the driveline.