Transmission problems

Need to know the exact fault code number. The common mistake is fault codes never say to replace parts or that one is bad. They only indicate the circuit or system that needs further diagnosis, or the unacceptable operating condition. When a part is referenced in a fault code, it is actually the cause of that code only about half of the time. You must first look for wiring and connector terminal problems, and other related causes.

May not be sensor failure, computer constantly measures voltage to sensor if it reads improper voltage in three consecutive drive cycles it sets code. So when sop cleared codes it was okay until after third cycle then code set and shifting was off. Have shop follow diagnostic procedure OHM check internal wiring harness. Think that is where problem is.

P1762 - Gov Press Sen Offset Volts Too Low or high.

Yup. This type of fault code is usually set due to a wiring problem. There is a specific range of voltages a sensor can send. If it sends the wrong voltage, but within that acceptable range, that is typically due to a mechanical problem it is detecting the results of, and you will notice a symptom related to performance. The sensor will detect the condition, but it's working properly to be able to do that.

To send a signal voltage outside that acceptable range can only occur due to a break in that circuit. That break can be inside the sensor, but it is much more common to find loose or corroded connector terminals, cut wires, or corroded splices. This is why fault codes never say to replace a part. They only point to the circuit that includes that part.

To add to the misery, if the problem is caused by corroded connector terminals, as an example, replacing the sensor requires that connector be unplugged. The scratching action can form a clean area for the terminals to make a good connection again, for a few weeks or months. Replacing the sensor is not what solved the problem. Unplugging it and reconnecting the plug is what temporarily solved the problem. This is where some people become angry because they incorrectly assume the new parts are failing repeatedly.

That would be the output speed sensor.

Yes you should.

Please let us know what you find so it will help others.

Best, Ken

Hello,

This sounds like it could be a partially plugged catalytic converter which messes which the engine vacuum. Here is a guide so you can do some testing.

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

Please let us know what happens.

Best, Ken