P0716-64 Turbine/input shaft speed sensor A-circuit range/performance

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EVAUTOS
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P0716-64 Turbine/input shaft speed sensor A-circuit range/performance

Post by EVAUTOS » Tue Oct 30, 2018 9:11 pm

Hello all,
I've been meaning to post this for months now. We have a 66 plate ingenium Disco sport Auto which has had the above fault happen several times and continues to do so. I was wondering whether anyone else had had faults with the Autobox's other than the two posts I found when searching.
Ours has had a new Autobox, has had engineers from JLR & ZF data logging when the fault happens. The data was sent to ZF Germany for analysis and they were unable to explain the cause of the fault. Another Disco sport was provided for my wife to try in the same circumstances in the same spot that it most regularly occurs and that vehicle faulted too.
JLR are now saying that it is a "trait" of the vehicle and nothing is wrong with it.
We have also had several other ongoing issues, with the Infotainment system locking up, the camera staying on and also sometimes not working. We've also had several return visits to get one of the headlight washers fixed as it kept staying out. There has been water inside the rear light unit on one side which had to be replaced. The door sense stopped working on one handle. The tailgate struts started crunching . The Adblu injector wiring broke, and its had a NOX system failure (which they appear to have done nothing about, as the fault still remains in the control unit) . The coolant level has also needed topping up a few times, although they were unable to find any leaks.
There are probably some things that i've forgotten, but I'm mainly interested in seeing if anyone else has had problems with their ZF 9 speed auto box, apart from the terrible delayed response when pulling away and then taking off when applying the accelerator pedal gently.
I do know why and when the P0716 fault is logging, but it shouldn't do it and it is a "fault" and not a "trait" as JLR claim . In my opinion ZF need to widen the parameters on their software. I know that there have been several updates already and ours is of course on the latest version.
Regards, Andrew
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Re: P0716-64 Turbine/input shaft speed sensor A-circuit range/performance

Post by Barnsh » Tue Oct 30, 2018 10:33 pm

Re “
Another Disco sport was provided for my wife to try in the same circumstances in the same spot that it most regularly occurs and that vehicle faulted too.


Can you expand a bit on the circumstances and what failed?

Thanks, you’ve certainly had your fair share of faults on the car, that’s for sure.
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Re: P0716-64 Turbine/input shaft speed sensor A-circuit range/performance

Post by EVAUTOS » Tue Oct 30, 2018 11:38 pm

Thanks for your reply.
The fault happens on a steep hill, when having to reverse, then deselect drive again. Forward motion is being detected before turbine speed is being detected, thus the plausibility error. Drive is indicated on the selector but it isn't quick enough to engage the gear ( I guess because it selects second gear, possibly) . I know ZF state that it is physically impossible for a human being to change gear faster than the mechatronics does, but it obviously can't select forward gear from reverse quick enough in this instance. The same fault has also occurred on a flat road.
Oh , I knew I'd forget something earlier, it's had two new reversing cameras too . Trouble is it is now 2 years old and I doubt we could hand it back. The dealers want to get us into a different vehicle. We would rather hand it back and get as much money back for it as possible, but will probably ens up havingbto trade it in elsewhere as they dont appear to be able to fix the faults and expectbus to live with it as a "trait" of the vehicle.
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Re: P0716-64 Turbine/input shaft speed sensor A-circuit range/performance

Post by Woolmeister » Wed Oct 31, 2018 11:55 am

Mine had a P0716 fault come up as well, some time back, which caused mine to go into limp home mode. I got LR Assist out to it to read the fault codes but they were unable to reproduce it. JLR didn't seem interested in looking into it further either.

I frequently get a loud clunk when selecting D after being parked on our driveway overnight (it has a considerable slope). I expect the gearbox will fail one day as a result of this.


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Re: P0716-64 Turbine/input shaft speed sensor A-circuit range/performance

Post by EVAUTOS » Wed Oct 31, 2018 12:46 pm

Thanks for your reply Steve.
Yours was one of the two posts I read, thank you.
I suspect the load clunk is it coming out of park when selecting drive.
Regards, Andrew
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Re: P0716-64 Turbine/input shaft speed sensor A-circuit range/performance

Post by Dashnine » Wed Oct 31, 2018 1:49 pm

So is it erroring because the car is already moving forward, down the hill under gravity with your foot lightly on the brake (as your foot has to be on the brake to put it into D)?
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Re: P0716-64 Turbine/input shaft speed sensor A-circuit range/performance

Post by Woolmeister » Thu Nov 01, 2018 8:31 am

That sounds to be the case, yes.

This is one of the problems with mine; I am able to select P before the car has come to a complete halt which invariably results in the loud clunk I get when I turn the selector out of P.

Granted, as the driver of the car, I shouldn't select P until the car has come to a complete halt but, conversely, most cars won't even allow you to select P until the car has come to complete halt. The DS is different in this regard and it is quite possible to select and - more worryingly - engage P whilst the car is still doing 1-2mph which I anticipate will cause significant gearbox damage when the pawl that locks the gearbox in P disintegrates under load.

This is absolutely a design fault as there is no way that the car should select P until the signal from the wheel speed sensors indicates the car is doing 0.0 mph.


Steve
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Re: P0716-64 Turbine/input shaft speed sensor A-circuit range/performance

Post by EVAUTOS » Fri Nov 23, 2018 10:42 pm

Dashnine wrote:
Wed Oct 31, 2018 1:49 pm
So is it erroring because the car is already moving forward, down the hill under gravity with your foot lightly on the brake (as your foot has to be on the brake to put it into D)?
I've only had it fault once whilst i've been driving when I had to quickly change from forwards to reverse. The biggest issue for me is the very delayed pulling away; especially when you most need it and also the many times that it takes off when I apply the throttle lightly.
My wife says that she doesn't let it move off until the gear is selected , but I think that it must be a case of too quick a gear change(and it moving slightly before engaging the gear, although she insists that it isn't moving); although this quick gear change shouldn't be a problem and has never been a problem on the many other automatic vehicles we have driven/owned.
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Re: P0716-64 Turbine/input shaft speed sensor A-circuit range/performance

Post by EVAUTOS » Wed Dec 05, 2018 11:23 pm

Just an update on this. The dealers have now bought our vehicle back. We lost about £16500 ,in the 26 months of owning this Sport. After doing a bit of research it seems that ZF are maybe going to be modifying the gear box for next year, by doing away with one of the dog clutches and replacing it with a friction type clutch.
JLR still can't sort out the problem with the reversing camera and it has been much worse since the last update. There were NOX faults and a DPF temperature sensor fault logging just before they had it back. It's a pity as the vehicle was very capable off road but dangerous on the road when pulling away or trying to accelerate quickly.
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Re: P0716-64 Turbine/input shaft speed sensor A-circuit range/performance

Post by Andy131 » Thu Dec 06, 2018 12:45 pm

quote -This is absolutely a design fault as there is no way that the car should select P until the signal from the wheel speed sensors indicates the car is doing 0.0 mph.

Our old Freelanders 1 & 2 were both auto, and could select P while moving, or go from drive to reverse also while moving. Amazing noise as the whole system locks up. My brother ran a hire car company years back, and had a Rover 820 brought back as the driver had managed to select park on the motorway at speed. That had a bolt that dropped into a castellated gear to physically lock up the box, that was a fun rebuild.
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