P2646 本田

 P2646 本田

Dan Hart

P2646 本田 - 诊断和修复

商店报告说,本田CR-V、本田Element和雅阁等配备2.4L发动机的车型上出现了大量的P2646本田故障代码。 P2646本田代码的定义是:P2646:VTEC油压开关电路低电压。 本田已经发布了第13-021号服务公告,以解决下列车辆的问题。 该车辆还可能有其他故障代码,如:

P2646/P2651(摇臂油压开关电路低电压)。

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P2647/P2652(摇臂油压开关电路高电压)。

See_also: 雪佛兰科鲁兹蛇形皮带示意图

受P2646本田和13-021号服务公告影响的车型

2003-12雅阁L4

2012-13年思域所有车型,除Si和混合动力车外,全部车型

2002-05年思域Si

2002-09年CR-V

2011年CR-Z

2003-11要素

2007-11 合身

如何修复P2646本田故障代码

根据服务公告,摇臂压力开关可能在以下情况下失效 本田已经发布了一个更新的零件;压力开关37250-PNE-G01和O型圈91319-PAA-A01。

如何测试VTEC机油开关

VTEC机油开关是一个常闭式开关。 ECM在蓝/黑线上向开关提供参考电压,当开关关闭时,参考电压被接地,因此ECM期望看到一个大的电压降。 接地线是棕色/黄色。 通过检查棕色/黄色线的良好接地开始诊断。 接下来,反探机油开关的连接器并在发动机运转时检查蓝/黑线上的参考电压。

VTEC机油开关如何工作

当转速达到2500-4000范围时,VTEC系统开始工作。 一旦转速达到该范围,ECM激活VTEC电磁阀,该电磁阀打开并允许油压到达进气阀摇臂。 随着油压的上升,油压开关打开并阻止参考电压接地,因此ECM看到的是全部参考电压,而不是一个大的电压降。

VTEC油压开关坏了是怎么回事

有缺陷的开关在RPS2500和更低时进入打开状态,而它们应该处于关闭位置。

造成P2646本田的其他原因

如果你已经更换了VTEC油压开关,但在2500-400的转速范围内仍有代码P2646,你就有低油压问题,油不干净,VTEC屏幕堵塞或VTEC组件有问题。 在这种情况下,确保油过滤器是新的,以确保压力不受限制或处于旁路模式。

Dan Hart

Dan Hart is an automotive enthusiast and expert in car repair and maintenance. With over 10 years of industry experience, Dan has honed his skills through countless hours of working on various makes and models. His passion for cars started at a young age, and he has since turned it into a successful career.Dan's blog, Tips for Car Repair, is a culmination of his expertise and dedication to helping car owners tackle common and complex repair issues. He believes that everyone should have some basic knowledge of car repair, as it not only saves money but also empowers individuals to take control of their vehicle's maintenance.Through his blog, Dan shares practical and easy-to-follow tips, step-by-step guides, and troubleshooting techniques that break down complex concepts into understandable language. His writing style is approachable, making it suitable for both novice car owners and experienced mechanics seeking additional insights. Dan's goal is to equip his readers with the knowledge and confidence needed to tackle car repair tasks on their own, thus preventing unnecessary trips to the mechanic and expensive repair bills.In addition to maintaining his blog, Dan also runs a successful auto repair shop where he continues to serve his community by providing high-quality repair services. His dedication to customer satisfaction and his unwavering commitment to deliveringexceptional workmanship has earned him a loyal customer base over the years.When he's not under the hood of a car or writing blog posts, you can find Dan enjoying outdoor activities, attending car shows, or spending time with his family. As a true car enthusiast, he is always up-to-date with the latest industry trends and eagerly shares his insights and recommendations with his blog readers.With his vast knowledge and genuine passion for cars, Dan Hart is a trusted authority in the field of car repair and maintenance. His blog is an invaluable resource for anyone looking to keep their vehicle running smoothly and avoid unnecessary headaches.