P1759(Front Brake Solenoid function) P1757(Front Brake Solenoid Circuit)
The day after the tropical storm hit Florida my car started having this problem. I drove through the heavy rain more than I probably should have. Some streets were flooded. My mechanic was quick to say that I need to head to the transmission shop. From what I've read these codes are almost always a loose pin connection in the valve body. My hopes were that a plug got water inside causing the codes. With nissan datascan is there something I can watch to monitor the front brake solenoid? If there's anything to diagnose the problem better please let me know

 

Does the ATF look milky? When you clear the codes, do they immediately return? What year is your G?
You may have gotten some water into the transmission if you got into deep water (or you radiator trans cooler is failing). I'd do a drain and fill of the trans fluid, maybe even drop the pan to ensure no water got in there.

Yes, its quite common for the pins to break/crack inside the TCM/valve body. Not sure, but I think this happens predominantly on the mid-2004 ('04.5') to newer (06/07 coupe) transmissions that have the TCM internally mounted inside the trans pan.
All 03 and early-04's have the TCM mounted externally in the passenger lower kick panel.
http://shop.ukrtrans.biz/wp-content/...gs/RE5R05A.pdf

Datascan allows you to do self-diagnostics on each of the cars modules, including the TCM, as well as live data read out.
https://nisscan.com/NDSII/index.php?content=selfdiagtcm

 

06 coupe. The fluid looked and smelled good on the dipstick, but I'll drain it tomorrow. At that point I'll end up dropping the pan and taking the valve body out. The codes return after putting it into drive every time. I believe the codes come up under the engine dagnostics, not the tcm.
I was just wondering if I could monitor the amps of the solenoids to see if a pin broke or something is out of the norm. I'll hook it up later and see what options there are.

 

Likely culprit is the pin on the valve body where it connects to the TCM harness. I'll look around for a youtube video I saw a while back that had a great picture of what happens.

Check out 15:23 in this video.

 

Thanks, I've watched that video at least 3 times by now lol
Probably going to take out the valve body tomorrow and take a look. Only problem is I don't have any experience soldering, and now is not the time to learn. If a pin is in fact broke, I was thinking of taking it to a computer repair or cell phone repair shop since they probably do some soldering.
I also hooked up NDS2 and watched some parameters. After the car goes into limp mode these gauges drop to zero. Would that narrow down the broken pin?

 

Soldering is not hard to learn. Practice tinning and soldering wires together, and you should be able to get it down. Its a great skill to learn/have!!!
You can get a Weller soldering iron from Home Deport for under $20 typically.

 

It was indeed a broken pin connection. Ended up picking up a solder iron from home depot and doing it myself. Its not even close to a good solder job but I checked for continuity before putting everything back together. Taller jack stands would have made the job much easier. Got a BP oil spill on the driveway to clean up now

 

Lol yeah anytime I'm doing "real" work on the car on stands I use my 6 ton stands for the trucks and get that thing WAAAAY up in the air. Fluid changes and such the 3 ton stands are fine but you just don't have room for much more.

Glad you were able to find the smoking gun with a broken pin, I wouldn't worry too much about an ugly job soldering, electricity doesn't care how pretty the work is.