stamina Posted May 25, 2007 Report Share Posted May 25, 2007 my friend put my 97 a8 on diagnose machine and it came up with these codes 17114,18157,17087,all to do with transmisssion wrong gear rattios,torque converter switch b malfuntion,wrong coding etc Link to comment Share on other sites More sharing options...
Ska Posted May 25, 2007 Report Share Posted May 25, 2007 Did he use VAGcom or an OBD tool thingy, just ask as VAGcom will give a little more info than that Link to comment Share on other sites More sharing options...
NickGUK Posted May 25, 2007 Report Share Posted May 25, 2007 heres the info for code 17114 17114/P0730 - Gear: Incorrect Ratio Possible Causes:- Wiring and/or connections faulty Sensor Gear Position Indicator faulty Mechanical failure Possible Solutions:- Check wiring and connections Check Sensor Gear Position Indicator I can find no codes or info related to the other 2 you posted, are you sure they are correct? Link to comment Share on other sites More sharing options...
Botang Posted May 25, 2007 Report Share Posted May 25, 2007 I have just posted the details over on Audiworld as they are very familiar with gearbox issues over in the USA so hopefully they will be able to guide you towards understanding what may have happened. Link to comment Share on other sites More sharing options...
Botang Posted May 25, 2007 Report Share Posted May 25, 2007 Its interesting you have the 18157 code, that doesnt come up very often, and maybe the where your problems have arisen from: [ QUOTE ] 18157 P1749 Control unit for automatic gearbox Wrong coding - Engine control unit has detected a fault in the "signal for the actual engine torque" - Engine control unit coded incorrectly or wrong engine control unit fitted [/ QUOTE ] The 17087 code usually is there because you havent pressed the brakes after turning the ignition on for the scan. The 17114 is not a good one to have as it is usually expensive Link to comment Share on other sites More sharing options...
NickGUK Posted May 25, 2007 Report Share Posted May 25, 2007 it is possible that its just the "common" F125 switch fault. that would tie up with both the "possible" causes i posted above EDIT you can ignore the code 17087, thats just the fact the brake pedal wasn't pushed before reading the codes. if the F125 switch fails or malfunctions, it will put the gearbox into "limp home mode". You can see more info on it here F125 Switch So dont be to keen to condem the box just yet, its highly likely it could be everyones favourite electircal gremlins returning. Link to comment Share on other sites More sharing options...
stamina Posted May 26, 2007 Author Report Share Posted May 26, 2007 that switch replacement looks like a nightmare to change, although it is probably easier than gearbox change,how can you tell if its switch without just replacing it? i have left the codes with a gearbox company that my friend knows and they said they will get back to me! my mechanic reset the codes after he had read them but it went straight back into limp mode as soon as i tried driving off.hope it isnt gearbox, it is a zf5hp19fla, what other cars did vw audi put these in and would a different gearbox fit in,just asking if i need to buy a 2nd hand one,which is perhaps cheaper than getting mine refurbed?thanks guys. Link to comment Share on other sites More sharing options...
S4_Dan Posted May 26, 2007 Report Share Posted May 26, 2007 I personally wouldn't risk running a sencond hand box. I recently had a quote for my 5 speed box to be recond' at £1600 all in. It's circa £3300 + Vat (IIRC, I stand to be corrected) for a brand new box by audi fitted with something like 30k or 3 year warrenty?!? Dan Link to comment Share on other sites More sharing options...
Botang Posted May 26, 2007 Report Share Posted May 26, 2007 Info from Audiworld: [ QUOTE ] How to rectify fault 17114 P0730 Gear/ratio monitoring Wrong ratio - Gearbox output speed sender -G195 faulty - Rectify fault as described under fault code 17105 / P0721 - ATF-level not OK or ATF contaminated - Check ATF level - Clutch slipping/defective - or solenoid valve dirty/defective - Check ATF for contamination Notes re fault recognition for fault code 17114 / P0730: ? The gear monitoring system in the gearbox control unit checks the ratios by comparing the engine output and gearbox output speeds for whichever gear is engaged. The above fault code is displayed if an incorrect gear ratio (implausible signal) is detected. ? When testing the stall speed, the gearbox input speed in the torque converter should be approximately 0 rpm with the vehicle stationary and a gear engaged. If this is not the case, the above fault code will be displayed to indicate possible clutch damage (see "Reading measured value block" =>Page 01-115; Display Group 001 17105 P0721 Sensor for Gear output speed -G195 Implausible signal - Open circuit or short circuit to earth or positive - Check wiring and connectors according to current flow diagram 5) - Screening for -G195 defective - Gearbox output speed sender -G195defective - Read measured value block =>Page [/ QUOTE ] I think its a case of doing the fluid/filter change as a first point of call as whats condition the gearbox fluid is in coudl give you a better idea of whats happening. Link to comment Share on other sites More sharing options...
stamina Posted May 27, 2007 Author Report Share Posted May 27, 2007 thanks for your help guys, i think im going to have to take it to audi or indy as my mechanic is adamant its gear box,obviously i dont want it to be,but if there other things that it could be, fingers crossed, i need someone who knows these cars,might try mastertech in morden that someone recomended.how much can i expect to pay for a true fault finding diagnose session!!!! Link to comment Share on other sites More sharing options...
NickGUK Posted May 27, 2007 Report Share Posted May 27, 2007 Well, i have always sat on the wall with this one tbh. Even if the box / fluid is a bit crap / worn, its "should" still work unless something mechanically has physically broken. The box has so much electrical bullsh*t connected to it, i would always look to that first.....just my opinion Did you have any signs of hunting / thumping previous to this problem ? Can you change gear in Tip mode, or is it stuck in third ? Link to comment Share on other sites More sharing options...
Botang Posted May 27, 2007 Report Share Posted May 27, 2007 I think the 18157 code is key here, it seems that it very rarely displays that code so id be inclined to follow the causes that I posted before Link to comment Share on other sites More sharing options...
royalremarkable Posted May 28, 2007 Report Share Posted May 28, 2007 sorry to piggyback but i am having a similar problem. 2001 A4 1.8T quattro. works in tiptronic. but won't engage 1st gear in automatic. no signs of gear problems prior. gives a P0730 dtc...incorrect gear ratio. so probably not solenoid. not shifter. any ideas? many thanks. Link to comment Share on other sites More sharing options...
Botang Posted May 28, 2007 Report Share Posted May 28, 2007 Its really easy to test the solenoids with vag-com as you can do output tests and it runs each solenoid through its maximum travel. I appreciate you dont think its a solenoid but it'd rule it out for deffinate. Link to comment Share on other sites More sharing options...
S4_Dan Posted May 28, 2007 Report Share Posted May 28, 2007 How is the solenoid test done via vag-com? I'm having probs with my box so could be worth checking. Only ever had limp mode on twice, both times same code, incorrect gear ratio. Only ever goes into limp mode whilst driving very very hard for at least 15mins! I can drive it hard a few times then return to normal driving and its fine. but still has the occasional thumping and hunting going on throughout. Dan Link to comment Share on other sites More sharing options...
stamina Posted May 28, 2007 Author Report Share Posted May 28, 2007 anyone got vag and willing to test for me, im in wimbledon!also just thinking as the red coolant level light came on fisrt could it just be that the atf fluid is low,would it go into limp mode purely for that? would vag software pinpoint the problem or would it still be a bit of trial and error, i would buy software but dont have a laptop.thanks everyone. Link to comment Share on other sites More sharing options...
Botang Posted May 28, 2007 Report Share Posted May 28, 2007 [ QUOTE ] How is the solenoid test done via vag-com? I'm having probs with my box so could be worth checking. Only ever had limp mode on twice, both times same code, incorrect gear ratio. Only ever goes into limp mode whilst driving very very hard for at least 15mins! I can drive it hard a few times then return to normal driving and its fine. but still has the occasional thumping and hunting going on throughout. Dan [/ QUOTE ] I cant remember exactly but its fairly simple, just go into the automatic transmission then I think its function 3 Output test. run this then re-cehck the fault codes Link to comment Share on other sites More sharing options...
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