Technical EBD,ABS and power steering failure

[tempz]

Hi all

Car runs fine, maybe a bit revvy in 5th, for 78k on her and now twice in a week I've been driving along and I then get the above messages, outside temp guage goes to dashes and the speedo goes back to zero. The warming lights tend to go off on a restart and all is well again.

Any ideas on what's up with my Casper

 

[tempz]

It's a 1.3 90 mjet too

 

[ChrisUK]

I'm guessing a dodgy earth. Check guides how to find and clean them.

 

[tempz]

I think if it was it would be more frequently happening

 

[ChrisUK]

Well mine's doing it now too lol ****ing Fiats...

 

[ChrisUK]

It may be battery problems. Gonna get mine tested today. TBH the mileage I do the thing could be completely knackered and I wouldn't know as it doesn't get left long enough to go flat.

 

[alexh365]

Right our error is P0500 - Wheel Speed Sensor.

Now first thing I wanna try is getting all 4 wheels the same tyre size. ATM front are 185/55/15 and rear 185/65/15 (Don't ask).

Is it likely that this could be the issue (These wheels went on the day before the issue started) and i reckon at 70mph when the issue happens the wheel speed sensor will see about a 5mph difference.

 

[Most Easterly Pandas]

Right our error is P0500 - Wheel Speed Sensor.

Now first thing I wanna try is getting all 4 wheels the same tyre size. ATM front are 185/55/15 and rear 185/65/15 (Don't ask).

Is it likely that this could be the issue (These wheels went on the day before the issue started) and i reckon at 70mph when the issue happens the wheel speed sensor will see about a 5mph difference.

Part of me wants to say yes, but I've never known a car to have issues with a space saver spare, which in theiory should cause the same issue with differences in speed readings.

 

[Reuuk]

Tyre size difference between front and rear wont make a difference, check the abs plug hasnt corroded

 

[matty seasider]

Right our error is P0500 - Wheel Speed Sensor.

Now first thing I wanna try is getting all 4 wheels the same tyre size. ATM front are 185/55/15 and rear 185/65/15 (Don't ask).

Is it likely that this could be the issue (These wheels went on the day before the issue started) and i reckon at 70mph when the issue happens the wheel speed sensor will see about a 5mph difference.

mine did this, took to fiat, and they came out with some tosh that it wasnt the abs sensor as they replaced that, but the wiring from there to the abs unit....and its not covered undr my extended warranty...

so off i went..

oh and this sensor wire was completely snapped clean in half, and all rusty where i assume water must have got to it, maybe triggering the fault as it maybe got a bad earth or something? but no pad sensoe warning on dash?

took passenger front wheel off, and unplugged abs wire from sensor, checked it all out, then gave a tug on the brake pad wear sensor...


it turned out this had snapped half way into the currugated pipe stuff...

re jointed it together,,,no more warnings?!?

weird, what has brake pad sensor have to do with abs, asr and hill holder?

the warnings were on constant, wouldnt clear with fiatecuscan, mentioned front abs sensor.... never done it since

 

[matty seasider]

my fault was c0030 btw = phonic wheel

 

[jameshobiecat]

As far as I an aware there is no link what so ever between the brake pad wear sensor and the abs/esp system. I've had plenty of cars where the brake pad sensor cable has failed and never once seen an error light as a result. I think it must be a coincidence that you fiddled with the wire and you've not seen the error since.

With reference to the earlier post about type sizes; my old 406 coupe used to flag up an esp error when a tyre with a slow puncture got down to about 20psi, quite handy really!

 

[ChrisUK]

Unless your tyre sensors are faulty then it's just plain annoying and dangerous .

 

[jameshobiecat]

Unless your tyre sensors are faulty then it's just plain annoying and dangerous .

???

 

[ChrisUK]

When the ESP error light is illuminated it usually means it's disabled... Can be quite dangerous.

 

[jameshobiecat]

Oh I see; although I'd say an under inflated tyre is far more dangerous than disabled esp.

 

[alexh365]

New tyres yesterday and a few miles of spirited driving and the fault hasn't returned. The error only showed at motorway speeds too which is interesting. Must be some tolerance for a size difference (due to deflation or space savers).

Inspected as much of the sensor wiring as I could and no obvious breakages nor corrosion.

Hopefully fixed but we'll see.

PS no ESP on the 1.3 Dynamic (Unless ordered as an option)