ZeroKunoichi

Hey everyone,

My RX-8 started to have issues last week with a my CEL light coming on and I brought it to a shop and had the mechanic read the code.

It came back with P1688 and he suspected the sensor being faulty. I have oil pressure as the gauge on the dashboard shows.

I ran into limp mode a couple days ago and I also have read all these threads about this issue.

https://www.rx8club.com/series-i-tro...roblem-234241/
https://www.rx8club.com/series-i-tec...-p1688-163019/

I had the CEL cleared and it hasn't showed up yet but if it does what should I do? Would I need to reset the switch as per the other threads? Could there be any other underlying issues with this?

Thanks in advance everyone

Legot

iTrader: (1)

You had the issue and didn't even make an attempt at the solutions you found? Why not?

The oil pressure gauge is tragically fake, but it's very unlikely that it we'll effect how your OMP is sensed by the PCM. Use the solutions you found, clean the connector, reset the valve, and reset the sensor profiles and you should be fine.

If you suspect the sensor is actually faulty here's a thread with the test procedure.
https://www.rx8club.com.au/forum/viewtopic.php?f=5&t=9921

ZeroKunoichi

Well the only thing I did was reset and had the CEL cleared. I was wondering if there could be even other possibilities on this issue besides what was already discussed.