P0605 OBD-II：内部控制模块只读存储器（ROM）错误 OBD-II故障代码P0605是什么意思？
OBD-II代码P0605被定义为内部控制模块只读存储器（ROM）故障。
PCM或动力传动控制模块在现代汽车中执行许多重要功能，例如管理燃油系统、点火系统、变速器、防抱死制动系统和牵引力控制系统。 PCM定期运行自我诊断功能，执行正常的数学计算，如果这些计算结果与预期不符，则会出现P0605代码等故障代码。设定。
See_also: P208E OBD II故障代码 代码P0605表示PCM的只读存储器（ROM）部分未通过例行自检。 这一点至关重要，因为ROM存储了PCM的所有操作系统软件。 如果PCM的这部分功能不可靠，则不能相信动力总成的主计算机能够准确完成工作，可能需要更换。
有此故障代码的车辆应送至修理厂进行诊断。 查找修理厂
P0605 症状
- 发动机检查指示灯点亮
- 排放检查故障
- ABS/牵引力控制指示灯可能点亮
- 车辆可能无法正常行驶和/或换档
- 燃油经济性降低
- 在特殊情况下，驾驶员未发现任何不利条件
- 在某些情况下，可能会出现性能问题，如停车时熄火和/或类似失火的症状。
触发P0605代码的常见问题
- PCM 缺乏适当的电压和/或接地
- PCM ROM内存模块故障
- PCM接地电路故障
- PCM控制的输出设备有缺陷
常见误诊
- 如果根本原因是 PCM 的电压不正常，则更换 PCM
- 如果根本原因是 PCM 接地电路故障，则更换 PCM
排放的污染气体
- HCs（碳氢化合物）：未燃烧的原燃料液滴，有异味，影响呼吸，导致烟雾。
- CO（一氧化碳）：部分燃烧的燃料，是一种无味的致命有毒气体。
- NOX（氮氧化物）：在阳光照射下导致烟雾的两种成分之一。
P0605 车间和技术人员诊断理论
当动力总成计算机中设置代码P0605时，意味着动力总成计算机或PCM的只读存储器（ROM）自检失败，并发现其只读存储器功能中存在错误。 在许多情况下，PCM无法获得高质量、一致的12伏电源和接地信号。 但在某些情况下，实际存储器模块存在缺陷，需要更换PCM，并在PCM中设置代码P0605。但在更换 PCM 之前，请务必检查输出设备是否短路，因为短路可能导致记忆功能失效。
当诊断P0605代码时，重要的是记录任何其他代码和P0605冻结帧数据。 然后，应通过试车重复代码设置条件。 密切注意发动机负荷、节气门位置、转速和路速，因为P0605可能很难检测到。
See_also: P0597 OBD II故障代码
Ronald Thomas
Jeremy Cruz is a highly experienced automotive enthusiast and a prolific writer in the field of auto repair and maintenance. With a passion for cars that dates back to his childhood days, Jeremy has devoted his career to sharing his knowledge and expertise with consumers who seek reliable and accurate information about keeping their vehicles running smoothly.As a trusted authority in the automotive industry, Jeremy has worked closely with leading manufacturers, mechanics, and industry experts to gather the most up-to-date and comprehensive knowledge in auto repair and maintenance. His expertise extends to a wide range of topics, including engine diagnostics, routine maintenance, troubleshooting, and performance enhancement.Throughout his writing career, Jeremy has consistently provided consumers with practical tips, step-by-step guides, and trusted advice on all aspects of auto repair and maintenance. His informative and engaging content allows readers to understand complex mechanical concepts easily and empowers them to take control of their vehicle's well-being.Beyond his writing skills, Jeremy's genuine love for automobiles and innate curiosity have driven him to constantly stay abreast of emerging trends, technological advancements, and industry developments. His dedication to informing and educating consumers has been recognized by loyal readers and professionalsalike.When Jeremy isn't immersed in automobiles, he can be found exploring scenic driving routes, attending car shows and industry events, or tinkering with his own collection of classic cars in his garage. His commitment to his craft is fueled by his desire to help consumers make informed decisions about their vehicles and ensure they have a smooth and enjoyable driving experience.As the proud author of the blog for the leading provider of auto repair and maintenance information to consumers, Jeremy Cruz continues to be a reliable source of knowledge and guidance for car enthusiasts and everyday drivers alike, making the road a safer and more accessible place for all.
