E390 Fuel Filter Restriction
产生此代码的情况:
电子控制模块（ECM）检测到燃油滤清器压差异常。 可在故障诊断与排除, "事件代码"中找到有关此事件代码缺省设置及范围的信息。
系统响应:
ECM 将会记录该事件。
390-1（警告）
无
390-2（减额）
发动机功率减额。
390-3（停机）
发动机停机。
可能需要更换燃油滤清器滤芯。
测试步骤 1. 更换燃油滤清器滤芯
- 更换燃油滤清器滤芯
- 重新起动发动机，检查有无激活的事件代码。
预期结果:
该诊断代码不再为激活状态。
结果:
- 正常 - 该诊断代码不再为激活状态。停止
- 不正常 - 该事件代码为激活状态。
修复: 燃油滤清器压差开关电路可能有电气故障。 请参阅故障诊断与排除, "燃油滤清器压差开关电路 - 测试"以了解诊断信息。
停止
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