P0390 OBD-II：凸轮轴位置传感器 "B "电路 OBD-II故障代码P0390是什么意思？
OBD-II代码P0390被定义为凸轮轴位置传感器 "B "电路。
凸轮轴位置传感器测量凸轮轴的准确旋转位置。 它提供发动机控制模块（PCM）用于控制喷油器和点火线圈的关键数据信号。 当PCM检测到不规则信号或无信号时，它将设置代码P0390。
有此故障代码的车辆应送至修理厂进行诊断。 查找修理厂
P0390症状
触发P0390代码的常见问题
- 断音环
- 凸轮轴位置传感器（CMP）故障
- 动力总成控制模块（PCM）故障
- 接线问题
P0390代码所需的常见维修
Ronald Thomas
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