The first step is to check the fluid (ATF). Probably best to drop the pan, change the filter, and refill fluid to the correct level.
17114/P0730/001840 - Ross-Tech Wiki
17114/P0730/001840 - Ross-Tech Wiki
2004 V6 4Motion. I just replaced my tranny because of the same thing. If you put it in tip and manually shift to 2, it will probably start moving. You can either manually shift through the gears, or put it back to D, and let it shift for you, until you have to come to a complete stop. Then you have to put it back in tip. If you keep letting it slip in D, it will go to limp mode, so it'll stay in 4th, until you shut the car off. Reverse will probably come and go. Sometimes it will slip, sometimes she'll catch and you'll be able to backup. Go ahead and check your fluid level, but don't bother changing the fluid and filter. That's $100+ USD you'll never get back. I bought a used tranny and swapped the valve bodies, hoping that would fix it, but that made no difference. So I swapped valve bodies back and ended up swapping the transmission. Several weekends of work later, and she shifts perfectly.Hello everyone,
I have a problem with my 2004 Passat B5.5, 5 speed automatic tiptronic transmission, EU model if that's comes in handy. My father had it yesterday for a short trip about 20Km he arrived without a problem finished his job and after some 3-4 hours got in the car, put it in reverse was normal, but the music was loud he wanted to turn the volume a little bit off but my mistake turned the radio down then he turned it on again and there it started the car was in reverse still but he told me that car didn't move a bit, he put it on D to drive a bit forward that wasn't working too, after about 10 min he told me that D started to work and made the trip just forward to our home and parked it and then it cut off again no gears. This morning (here in Europe) i got to see what's what. Turned on the car Workshop Emissions and engine check light were on dashboard, the car when i put it on reverse would go a little bit as automatics go but with gas there was no increase of speed, but in D the car would move just a little and would stop if i give gas it would react like it was in neutral and around 4000 rpm would start moving just a little. My friend connected it with OBD first code i don't remember only something like trouble contacting ECU and the other one was 11714 - Incorrect gear ratio P0730 - 35-00 --. Cleared the codes that first one is gone but the second Incorrect gear ratio is still there. And the final thing i noticed was if i'd put it on a forward gear and hold the brakes after 2-3 seconds the car started shaking that was a first. SORRY THAT THE STORY GOT THIS LONG BUT I WANDED TO GIVE YOU ALL WHAT HAPPEND SOO ANYBODY COULD TELL ME WHAT TO DO.
Thanks in advance
Amar.
A crusty TCM would likely cause all kinds of communications, and circuit faults. As would damaged and dirty connectors. If you can move the shift lever, and see the selected gear change on the dash, I doubt the multi-function switch is to blame.Low fluid level could cause the issue, but a leak should be obvious. Water damage to the TCM (under the passenger front carpet) will also cause this. After those, the multi-function switch (on the driver's side of the trans, behind the mount bracket) is the most likely issue. Damaged wiring or dirty connectors should also be checked.
Was it raining days before? I had similar problem because of water ingres (TCU was full of water). Then, it turns trans. into limp mode, it has only 3th gear (I think).
If this was question for me - No, I didn't because I hadn't ay scanner by my side. I remember that there was 'low voltage supply on some module'.Out of curiosity, did you happen to try scanning the TCM while it was acting up? I would think a shorted TCM would have all kinds of communication and circuit faults. More then just a single incorrect gear ratio code.
This!!Low fluid level could cause the issue, but a leak should be obvious. Water damage to the TCM (under the passenger front carpet) will also cause this. After those, the multi-function switch (on the driver's side of the trans, behind the mount bracket) is the most likely issue. Damaged wiring or dirty connectors should also be checked.
That makes sense. I would expect to see some sort of voltage/circuit integrity code(s) if water or the wiring harness were at fault.If this was question for me - No, I didn't because I hadn't ay scanner by my side. I remember that there was 'low voltage supply on some module'.
After checking all wire harnes and fuses (everything was OK) I opened TCM and I found that some connections on board were damaged from watter. Cleand with isopropyl alcohol because of rust. Resolder connections. See picture. View attachment 90049 View attachment 90051