P0481 OBD-II：风扇2控制电路 OBD-II故障代码P0481是什么意思？
OBD-II代码P0481被定义为风扇2控制电路。
电动冷却风扇系统的目的是在炎热的天气和/或空调开启时，以及/或车辆在走走停停的交通状况下行驶，导致散热器上的气流不足时，为传统散热器冷却系统提供额外的冷却能力。 当发动机控制模块（PCM）无法按要求控制冷却风扇时，将设置代码P0481。
有此故障代码的车辆应送至修理厂进行诊断。 查找修理厂
P0481 症状
- 空调可能不工作
- 冷却风扇可能一直开着
- 发动机可能过热
引发P0481代码的常见问题
- 发动机冷却风扇控制模块故障
- 发动机冷却风扇故障
- 发动机冷却风扇继电器故障
- 动力总成控制模块（PCM）故障
- 接线问题
P0481代码所需的常见维修
Ronald Thomas
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