CID 0274 FMI 04 Atmospheric Pressure short to ground
产生此代码的情况:
电子控制模块（ECM）可检测以下状况：
- 来自大气压力传感器的信号电压低于 0.2 VDC 超过 30 秒。
- ECM 至少已通电两秒钟。
- 发动机不运转或已运转超过十秒钟。
系统响应:
ECM 将记录诊断代码并触发快照。 ECM 将缺省大气压力为 100 kPa (15 psi)。
发动机功率会降额百分之十。
测试步骤 1. 进行以下的诊断步骤: 发动机压力传感器开路或短路 - 测试
结果:
- 正常 - 停止
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