E198 Low Fuel Pressure
产生此代码的情况:
电子控制模块 (ECM) 检测到发动机燃油压力有故障。 故障诊断与排除, "事件代码"中提供有本事件代码默认设置及范围的资料。
系统响应:
ECM 将会记录该事件。
E198(1)
- 它对性能没有影响。
E198(2)
- 发动机功率降低。
测试步骤 1. 检查燃油系统部件
- 检查输油泵体中的安全阀。 检查弹簧或阀组件是否损坏。
- 核实燃油歧管中的压力调节阀是否工作正常。 检查阀组件是否损坏或有污垢。
- 检查从燃油滤清器底座到燃油箱的回油管是否损坏或皱缩。
预期结果:
安全阀、压力调节阀或连至燃油箱的回油管没有问题。
结果:
- 与预期结果相符 - 安全阀、压力调节阀或连至燃油箱的回油管有问题。
修复: 进行必要的修理。 确认修理后问题被排除。请参考系统操作/测试与调整。
停止
- 与预期结果不相符 - 燃油系统未发现机械问题。
修复: 如果怀疑传感器电路存在电气问题,请参阅故障诊断与排除, "发动机压力传感器开路或短路 - 测试"部分的诊断功能测试。
停止
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