Hello all,

I've been getting the HDC Inactive, Suspension lowered message for a while now with the "3 amigos" on the dash. Fault reading with the iid tool came up as "Front Right Wheel Speed Sensor Open Circuit" which Patrick at GAP [ut down to either a wiring (cut, corroded) or a sensor problem. I've had the car at the mechanics and what he has said is that he cant see any issues with the wiring and that the sensor is new.

He is now putting the error message down to a worn driveshaft - and says that a couple of teeth (I assume he means splines) on the shaft are worn. Before I embark on a rather expensive drive shaft replacement exercise, any thoughts as to whether this makes sense ... or is that a totally unrelated issue to the HDC Failure?

Many thanks for your help! African Bush Junkie ... in London!

Stats:
2006 TD6 Vogue SE
1972-2015 DeRanged Rover
2001 P38 dHSE (SOLD)

might be wrong but suspect that its not the driveshaft.. i've been told [eldest son who is a mechanic] that you can test the sensor by unplugging it and testing with an ohm meter... apparently if it has resistance then its ok , if no resistance then the wiring or sensor is faulty.. ... - .- -.




Y. O. L. O.
.

I would have thought the same as Stan. As he doesn't know I would start with the cheap option an change the sensor for an OEM part and then investigate the drive shaft option. [img]http://www.fuelly.com/driver/rob2529/range-rover[img/]
04, 4.4V8, Vogue Oslo Blue with LPG.
"You can sleep in your car, BUT you can't race your house!!!!"

If something can't be fixed with a hammer....... You have yourself an electrical fault!

We have changed the sensor and were still getting the fault. I am convinced its a wiring issue but the mechanic is insisting that there is wear on the drive shaft and that is what is causing the problem. Might just get a second opinion from someone first before I change anything. African Bush Junkie ... in London!

Stats:
2006 TD6 Vogue SE
1972-2015 DeRanged Rover
2001 P38 dHSE (SOLD)

Did you get an OE sensor? They have been known to be supplied broken. I would try Stans sons method of testing. How many miles has your FF done? I've never heard of worn drive shafts on these cars yet but not impossible. [img]http://www.fuelly.com/driver/rob2529/range-rover[img/]
04, 4.4V8, Vogue Oslo Blue with LPG.
"You can sleep in your car, BUT you can't race your house!!!!"

If something can't be fixed with a hammer....... You have yourself an electrical fault!

I dont think a worn driveshaft would cause this unless it was slipping and if that was happening there would be more than 2 'teeth' worn. Ask him to explain why he thinks it is the cause.

If the driveshaft was slipping, you would know about it - they don't fail a bit at a time - it would be stripped out and you would hear it - the TC would also be doing wierd .

The IID tool will show you if the sensor is working - if it is not showing anything, then check with a meter at the sensor - if that is ok, then you have a wiring issue.

Thanks All,

I'm going to take it to someone else to do the testing for me as have lost faith in the other chappie. I'll let you know how I get on.

Mileage is 94K so I'd be surprised if the drive shaft was slipping. He said something about a trigger wheel and teeth being worn - does that make any sense? African Bush Junkie ... in London!

Stats:
2006 TD6 Vogue SE
1972-2015 DeRanged Rover
2001 P38 dHSE (SOLD)

DeRanged Rover wrote:

He said something about a trigger wheel and teeth being worn - does that make any sense?

Isnt there a switch under the brake pedal for the hdc ? That plays up

Also ive had hdc faults when the battery was playing up onto no6 Range Rover

Everyone needs a hobby

Never heard of a switch on the brake pedal for the HDC. Please tell me more. always hand to know how this witchcraft works.  [img]http://www.fuelly.com/driver/rob2529/range-rover[img/]
04, 4.4V8, Vogue Oslo Blue with LPG.
"You can sleep in your car, BUT you can't race your house!!!!"

If something can't be fixed with a hammer....... You have yourself an electrical fault!

Im pretty confident there is a switch in with the brake pedal thats associated with the hdc ive never changed one but im sure there is one there as if you google hdc faults for l322 range rover it does come up onto no6 Range Rover

Everyone needs a hobby

Thanks. Will look into it for the inevitable HDC fault I'm bound to get. Lol [img]http://www.fuelly.com/driver/rob2529/range-rover[img/]
04, 4.4V8, Vogue Oslo Blue with LPG.
"You can sleep in your car, BUT you can't race your house!!!!"

If something can't be fixed with a hammer....... You have yourself an electrical fault!

It might not be a case of the teeth being worn, but more a case of rusty gunk being stuck between the teeth. The result being that it creates a flat spot at the height of the teeth with the same effect as missing teeth. I found this when I replaced a sensor on mine.

May be worth taking the sensor out and look down the hole at the teeth and use a screwdriver to clean out the grooves if needed.

Also, the sensor cables can rub on the side of the wheel wall on the front as they wrap around the strut. Check them for wear. V8 or else ...