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  #1  
Old April 11th, 2011, 10:42 PM
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Baird M. Gehring
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P1317

So my check engine light came on today and I took my 97 NAS D90 to get the codes read. P1317 is the only code that showed up on the scanner. Anybody know what this code means? I didn't notice any problems or differences in the way the truck is running, it's running great in fact! But the check engine light is on.

------ Follow up post added April 11th, 2011 10:19 PM ------

Well thanks to Google I've learned that this code has to do with the ABS system and means rough road low line fault. Anybody have any recommendations for where to go from here? I replaced all my brake pads and one rotor not too long ago, brakes do squeal a little though.

------ Follow up post added April 11th, 2011 10:22 PM ------

Well thanks to Google I've learned that this code has to do with the ABS system and means rough road low line fault. Anybody have any recommendations for where to go from here? I replaced all my brake pads and one rotor not too long ago, brakes do squeal a little though.
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  #2  
Old April 12th, 2011, 12:11 PM
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Jake K.
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Make sure your ABS sensor hasn't back'd out a little bit. Try tapping them all back in some and clear the codes and see if that did it.
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  #3  
Old April 12th, 2011, 12:31 PM
Tyler Wirken
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I had this happen years ago to my truck. Basically nothing to worry about at all. Ironically those "ABS" sensors at each wheel are only on that truck to ensure that the check engine light will not come on!

D-90's do not have ABS. However the 4.0 engine has more advanced sensors etc.. than the 3.9. So when the truck is off-road the engine will experience minor hiccups and misfires etc... So those sensors at the wheels sense difference in wheel speed when offroad and tell the computer that the truck is offroad and to basically ignore all the misfires etc... till it is back onroad. So from what I was told that entire system is there to tell the engine it is offroad and to not turn on the check engine light as there is nothing really wrong. So I find it ironic that mine malfunctioned and now the check engine light is one all the time.

But yeah try going around to all of your wheels and where there is a wire going to a sensor push on the sensor to re-seat it so it is touching the grooves on the back of the rotor on the rear and down the the CV joint bell in the front. If that does not fix it then you can try replacing the computer for this system under the passenger seat.


Hope that helps.
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  #4  
Old April 12th, 2011, 12:42 PM
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also if the sensors themselves are bad it will set a fault too.....if you have access to land rover T4 i think you can trick the sys and read the abs faults as a D1 of the same year and i think it will show the ABS sensor faults
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  #5  
Old April 16th, 2011, 11:31 AM
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Baird M. Gehring
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alright thanks for the help. I took out ea sensor, cleaned it w/ wd40 and tapped them all back in well, had the check engine light reset, hopefully this will fix it for good (or at least for a while). it's funny that the sensors would throw that code when I haven't been off road though.
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  #6  
Old April 16th, 2011, 12:21 PM
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wheel bearing play will "knock" the sensors back away from the reluctor wheel on the cv joints and rear rotors, starting the process all over again...
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  #7  
Old April 17th, 2011, 07:35 PM
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Baird M. Gehring
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ugh, check engine light came back on today, same code, now what?

------ Follow up post added April 17th, 2011 06:37 PM ------

so then if that's the case do I just need to tighten up my wheel bearings? I greased them not to long ago and I think I put them back on tight enough. Or could it possibly be a bad ABS sensor?
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  #8  
Old April 18th, 2011, 01:02 PM
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Jake K.
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Check to see if you have ANY wheel bearing play. You said you just repacked them....see if they backed off abit. If so...retighten them and clear the codes and see if it goes away before you throw $$$ @ a sensor or anything else!
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  #9  
Old April 26th, 2011, 11:46 AM
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Baird M. Gehring
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Quote:
Originally Posted by Roverchef View Post
Check to see if you have ANY wheel bearing play. You said you just repacked them....see if they backed off abit. If so...retighten them and clear the codes and see if it goes away before you throw $$$ @ a sensor or anything else!
Well I went around and checked all the wheels, one wheel had a considerable amount of play so I tightened up the nut there but the rest were good and tight. So I drove it around and the check engine light actually went off! So I thought surely that must have fixed it, then yesterday I noticed it was back on again. Haven't gotten the codes read yet but I'd bet it's the same code, so if it is what might y'all recommend I do now? Gotta make another trip to autozone
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  #10  
Old April 26th, 2011, 05:32 PM
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Jake K.
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What wheel was loose? Front or back? Pop the sensor up and out and take a look @ the end of it and see if it looks like it's been hit or funky patterns ground into it. It should be nice and smoothe.
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  #11  
Old April 27th, 2011, 02:21 PM
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Baird M. Gehring
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Front left wheel was loose. Will check the sensor later this evening. I pulled all the sensors to clean them and didn't notice any defects, perhaps I didn't look close enough at that particular sensor.
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  #12  
Old April 27th, 2011, 02:25 PM
Tyler Wirken
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As stated before if it was a front wheel loose it would effect the rough road sensor as it reads off of the CV joint and not the rotor as on the rear wheels so if the bearings are loose on the front ones it would not throw a fault.
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  #13  
Old April 27th, 2011, 07:29 PM
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Baird M. Gehring
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well my check engine light went off by itself again so maybe it's realized there's nothing really wrong? I don't know.
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  #14  
Old April 27th, 2011, 08:02 PM
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Jake K.
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Quote:
Originally Posted by Tyler Wirken View Post
As stated before if it was a front wheel loose it would effect the rough road sensor as it reads off of the CV joint and not the rotor as on the rear wheels so if the bearings are loose on the front ones it would not throw a fault.
Am I the only one or did that not make sense? On another note...if any of the wheels were loose it can cause it to throw a code due to it can come from harmonics also being out.
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  #15  
Old April 30th, 2011, 02:48 AM
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Baird M. Gehring
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Well my check engine light keeps going off and on, it's currently back on. So far nothing I've tried has solved the problem so im thinking I might just take it to a local independent rover shop although I don't really want to shell out 90 bucks for a simple in depth diagnosis/scan. So I am still looking for suggestions I'm thinking at this point it's probably a bad sensor ( unless someone knows of another Rover gremlin that causes this code) but as to which one I am not sure. Sorry if I am being a little annoying about this somewhat inconsequential check engine light/P1317 thing but unfortunately I'm somewhat of a perfectionist and unfortunately(usually fortunately) I own a Rover.... Bad combo I think.
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  #16  
Old April 30th, 2011, 10:57 AM
Tyler Wirken
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Jake-

The front sensors on a d-90 are in the top of the swivel ball housing and push down onto the bell of the CV. There is a ring of grooves on the bell of a 1997 CV for that sensor to read off of. In the photos attached you can see what I am talking about. One CV has grooves on the bell the other one is smooth. There is not any room on the front wheels for the ABS/rough road sensor to go to read off of the back of the rotor like the back is why I assume it is like this.

Tyler
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  #17  
Old April 30th, 2011, 11:03 AM
Tyler Wirken
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Quote:
Originally Posted by BMGmotors View Post
Well my check engine light keeps going off and on, it's currently back on. So far nothing I've tried has solved the problem so im thinking I might just take it to a local independent rover shop although I don't really want to shell out 90 bucks for a simple in depth diagnosis/scan. So I am still looking for suggestions I'm thinking at this point it's probably a bad sensor ( unless someone knows of another Rover gremlin that causes this code) but as to which one I am not sure. Sorry if I am being a little annoying about this somewhat inconsequential check engine light/P1317 thing but unfortunately I'm somewhat of a perfectionist and unfortunately(usually fortunately) I own a Rover.... Bad combo I think.

You are correct being a perfectionist and a defender owner are sometimes trouble! I know cause I am the way. I just do not have the funds to make it perfect so therefore I am forced to accept it.

Do you know anyone with a 1997 d-90 near you? IF so you could borrow their computer that runs the rough road sensor system and see if that fixes it. IF so then you know your problem and you can buy a new one. IF not then you know it is a sensor.

The unit is located under the passenger seat in the seat box. There are two things in there the radio amp and the unit that runs these sensors. Grab a 10mm wrench and remove it from the mounting bracket and plug in another one and drive it for a week or so and see what happens. Mine got wet years ago and that is why the check engine light is always on now. I just removed the light bulb! I figure I can usually tell when something is wrong with my truck then I will just go read the codes then.

Good luck
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  #18  
Old April 30th, 2011, 01:24 PM
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Baird M. Gehring
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There is someone with a yellow softop D90 that lives pretty close to me, it does have the round taillights so it could be a 97, not entirely sure though. I always see it parked in their driveway. Don't know them though or even if they have a scanner.
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  #19  
Old September 11th, 2013, 10:00 PM
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Baird M. Gehring
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So I never got my issues with the P1317 CEL resolved. I thought I had for awhile but lately I've just been letting the CEL cycle on and off because the truck runs fine with the CEL on and I knew it was just an ABS sensor thing. Tonight I went out to my truck, started, felt like the engine was missing... no check engine light. After setting off sure enough the light came on so I went to get it read and it's the same P1317 but is now accompanied by another code; P1316. I searched on the forum and could only find one thread on the latter code that wasn't very helpful. Sorry to bring up an old thread. Can someone shed some light on this?
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  #20  
Old September 12th, 2013, 10:13 PM
Lemonhead
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My truck has thrown the 1317 a few times over the last 12 months. Reset it last about three months ago and hasn't tripped since then (haven't done anything else).

I believe the 1316 code is "misfiring" - check the wires - make sure they are snug (both ends). You probably would notice a rough idle though if it was truly misfiring.

These things are finicky and sometimes no rhyme or reason as to why they trip.

There's a site that lists all the Defender codes (I'm on my phone an don't have it handy).

Worth the $100 to purchase an OBD reader so you can reset it yourself - mine is permanently plugged in and tucked under the console (where the fuses/relays are).

Hope that helps.
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