Possible causes · Low transmission fluid level · Dirty transmission fluid · Faulty UD solenoid valve · UD solenoid valve harness is open or shorted · UD solenoid valve circuit poor electrical connection
The P0765 code is detected when the ECM detects an improper voltage drop when it tries to operate the solenoid valve.
Possible symptoms · Engine Light ON (or Service Engine Soon Warning Light) · Transmission will not shift gears
What Repairs Will Fix P0765? Changing the transmission fluid and filter Replace faulty solenoid Repair or replace a faulty transmission pump Repair or replace defective transmission valve body Perform transmission flush to clean passages Cleaning corrosion from connectors Repairing or replacing wiring Flash or replace PCM/TCM Install a rebuilt or remanufactured transmission
问了4家，一个比一个狠，老墨说换transmission油，换sensor要600-800，不包好，要包好rebuild transmission，1800； 老中最狠直接说3900.
如果不管这code它还能开吗？
P0765 DODGE - Underdrive Solenoid Circuit Fault
Possible causes
· Low transmission fluid level
· Dirty transmission fluid
· Faulty UD solenoid valve
· UD solenoid valve harness is open or shorted
· UD solenoid valve circuit poor electrical connection
The P0765 code is detected when the ECM detects an improper voltage drop when it tries to operate the solenoid valve.
Possible symptoms
· Engine Light ON (or Service Engine Soon Warning Light)
· Transmission will not shift gears
https://www.transmissionrepaircostguide.com/p0765/
What Repairs Will Fix P0765? Changing the transmission fluid and filter Replace faulty solenoid Repair or replace a faulty transmission pump Repair or replace defective transmission valve body Perform transmission flush to clean passages Cleaning corrosion from connectors Repairing or replacing wiring Flash or replace PCM/TCM Install a rebuilt or remanufactured transmission先 drain and fill ATF, 很容易，如果还有问题，就可能是电磁阀的问题了，可以参考youtube换电磁阀，不难
发信人: dreamer8888 (dream), 信区: Automobile
标 题: highlander 2017 major transmission flaw?
发信站: BBS 未名空间站 (Sat Oct 19 21:22:43 2019, 美东)
今天收到toyota来信，说不是recall, 但说如果发现有症状，可以十年内无里程限制免
费换transmission. 车开了近三年了，刚过15k，不知道是不是有啥致命问题，能不能
保险点，要求预防性换transmission? 记得那年买车的好几个，有没有经验？谢谢！
看看这个就明白地毯根本就不是问题
firmware里有一万多个全局变量，发生什么都不奇怪。
https://www.youtube.com/watch?v=dsTiPhcaeus
如果自己不能动手，遇到这种沾上transmission 的活，去车铺多半不会像想象中的那样简单。要是去dealers 你就更要祝福自己了。
你可以先看看p0765的代码说明。出现这种状况，没人能只凭代码就药到病除。看看列表中最可能的原因，逐次排除。如果对该车非常有经验的人也许会更快的判断出真正的原因。个人觉得之前网友的建议不错。从最简单的开始，换transmission液。想什么都不做继续开车，应该不是好主意。
https://www.obd-codes.com/p0765
视频可以看出修车的人也不是很专业，但从另一个角度说明即便换阀门也不难，所以这个视频更适合初学者，至少有些感性的认知。多在网上找一找，有很多信息。要是准备长期持有该车，拥有该车的修理手册是最应该的。
Good luck!