Transmission Range Sensor Circuit High Input

[Jay Serasinghe]

Dear Experts,

I have a problem with my car. Nissan FB15 automatic tranny.

P0708 = Transmission Range Sensor Circuit High Input.

The car shift weird, like it didn't know what gear it wanted to be in and all of a sudden the rpms would go really high, like the transmission downshifted, then back to normal. Also the OD Off indicator blinks when the OD is set to ON.

will this be solved after replacing the Transmission Range Sensor?

Transmission Range Sensor is also called as the CAM Position Sensor?

Appreciate ur help on this.

[terrabytetango]

That seems about right, your transmission has no idea where the shift points are so its basically shooting in the dark. The cam position sensor (also known as the cam angle sensor) is different, but the FB15 did have an issue with that as well, on the QD15 engines. But your issue lies not with that.

[Jay Serasinghe]

Thanks terrabytetango.

I reset the trouble code. Is it harmful to run in this state for a while untill i change the sensor? Does it affect the gearbox?

[terrabytetango]

I would advise against running it like this, apart from taking it to the garage to get it fixed. It will definitely affect the gearbox due to its erratic shifting behaviour. Your issue might most probably a simple one where the connector is loose, rather than a bad sensor.

[Jay Serasinghe]

Tnx terrabytetango, I should get it checked during the weekend.

[Jay Serasinghe]

Got it checked. Cleaned the Input sensor contacts. So far didn't observe the issue again. Hopefully this solves it rather than going to replace the Transmission Range Sensor.