Hi 

I have a Yeti L&K my second one and 5th Skoda 

the issues is all the lights are displaying yellow Tyre moniter .power steering .traction control ..lights .also  shows on start up  Electronic stability ESC . shows bend light function .

I was initially told by a Skoda garage possibly battery but could not look at it for weeks ,went to Halfords they checked and said battery ok .Called out RAC who diagnosed as a 

FL ABS sensor  disconnected it as was throwing up speed differance to DSG  BOX .

Went into a local garage who replaced the sensor faults cleared and all was well for about an hour then all lights came on again ,they checked to see if the copper cable leading into the sensor was broken it wasn't .I had looked a few vids which showed the reluctor  ring could be damaged and not picking up a signal initially they said you cannot view it from the hole in the abs sensor when challenged say did look at it and it was ok ,now they say it needs a new hub bearing inc the new reluctor ring  or possibly the  ecu brain needs checked .at a total loss the ironic thing is the car drives great stops steers of no issues ,when the lights where out when braking to a stop the pedal was hard and a shudder through it garage said abs kicking in when lights all on no brake issues ...any thoughts as not confident in garage to be fair have  used before and dont want to be throwing money at it to find a fault .Thanks 

19 minutes ago, kitchens said:

now they say it needs a new hub bearing inc the new reluctor ring 

It's usually the reluctor ring that causes the problems you've been getting.

Thanks for the quick reply ...told that but when the garage say it cannot be seen when questioned say they checked it any vids I seen show the ring when hub is rotated ,can you just fit the ring or is it better to just fit new hub . 

9 minutes ago, kitchens said:

can you just fit the ring or is it better to just fit new hub . 

Fitting the whole hub is probably easier and more profit for garage but the ring is available separately so that has to be cheaper if you have the tools and knowledge to remove the old one and install the new one.
BUT it could be corrosion on the ABS ring that has damaged the ABS sensor.

Back to square 1 .. garage fitted a new SKF wheel bearing kit with  the new reluctor sensor already fitted ,all the lights out and what looked to be ok ,did a test drive and fine .Took me out to show things ok and first corner applied brakes at low speed and the ABS sensor kicked in a dead pedal vibration  all lights on again  ,stopped switched off engine and restarted again lights all out drove for a few miles braking at different speeds all ok ,then lights all on again .Its had also a new ABS switch fitted  and the lead that comes from the sensor has been checked  to see if the copper wire has a break in it . and to date spent close to £300 in fairness to garage have spent more than 3 1/2 hours on it .I is booked in again on Monday to check if their is a short at the ABS sensor module i believe its below the battery ,battery showing 12.8 on my charger so assume not battery related .said maybe a break in the connection as it goes into the sensor .Tried calling Skoda assist but all they said was take it into a dealership for a scan ,did call a local dealership who said in his 25 years has never fitted a ABS module ,the car drives great with lights on at least I am mobile .ANY THOUGHTS GUYS     

ystem Type: GEARBOX Name: GEARBOX - DSG DTC: 18255,Fault codes in ABS controller System Type: CHASSIS Name: 4WD ELECTRONICS - DIAGNOSE DTC: U112300,Failure of the frame CAN bus System Type: BRAKES Name: ABS/ESP - MARK 60 EC1 DTC: 03839,Rpm sensor, left front; signal fault DTC: 00668,+30 voltage DTC: 01325,Tyre pressure monitoring DTC: 00283,Front left wheel speed sensor System Type: WHEEL SYSTEM Name: TIRE PRESSURE MONITORING SYSTEM DTC: 03839,Rpm sensor, left front; signal fault DTC: 00668,+30 voltage DTC: 01325,Tyre pressure monitoring DTC: 00283,Front left wheel speed sensor System Type: STEERING Name: STEERING ASSISTANCE - DIAGNOSE DTC: 01316,ABS control unit System Type: SOUND SYSTEM Name: INFOTAINMENT - INFORMATION ELECTRONICS 1 DTC: B201200,Datarecord, implausible value. System Type: LIGHTING SYSTEM Name: HEADLIGHT CONTROL - HEADLIGHT AIM CONTROL DTC: U112300,Failure of the frame CAN bus System Type: DRIVER ASSISTANCE SYSTEM Name: PARKING ASSISTANCE - DIAGNOSE DTC: D01716,unknown

 

THIS IS ACOPY OF THE RAC DIAG ON THE CAR BEFORE IT WENT INTO GET ABS  SENSOR FITTED 

I take it they did change the reluctor ring and ABS sensor on the front left.

correct the ABS plastic  sensor was fitted first it was a decent make Pagid  and lights went out but soon after came on ,then the new ABS wheel bearing which  had the new reluctor ring  fitted within in SKF so a quality   part  lights out but later came on  . Got another ABS to try in case new one faulty but he recons its good and fault lies in wiring contacts to ABS MODULE .these part are between £800 -1200 for genuine Skoda ones, even sending away old one  for testing quotes £550e.

Car is a 15plate L&K with just 51k miles  full Skoda main dealer service since new on time   

Hi Kitchens

 

Editing your RAC diagnosis and removing duplicates etc leaves the following fault codes:

 

18255,Fault codes in ABS controller

U112300,Failure of the frame CAN bus

03839,Rpm sensor, left front; signal fault

00283,Front left wheel speed sensor

00668,+30 voltage  

01325,Tyre pressure monitoring  

Multiple warnings/fault codes are often due to the common cause of a failing battery, but you have checked that.  I assume the 12.8 V was off load, one would expect nearer 13.5 to 14.0 V when being charged. 

 

Previous forum posts also suggest that the loss of an ABS sensor signal can upset multiple systems. 

However, it's interesting that you are getting DTC 00668, which suggests that the +12V supply to the ABS unit may have a problem.  The code 30 means it is derived directly from the battery, i.e. not via the ignition switch.  Even if the battery is OK, there could be a poor connection / loose fuse etc in the supply to the ABS unit, causing a more localised loss of voltage.  This may be exacerbated when the ABS unit is actively reducing the brake line pressure, when its current consumption rises as its internal solenoids come into play.  More current will of course cause more voltage drop in any poor connection.

 

I suggest you check any fuses and cables in the supply line from the battery to the ABS, to eliminate the possibility of trouble here. However, be aware that DTC 00668 can also be logged in cold weather if the (possibly slightly tired) battery voltage dips too low when cranking

many thanks the car is going in on Monday to check to see if their is a voltage drop or break in wiring to the abs module.will send over your post to the person doing the work .I am not technical in any way and do not understand a lot of the working in cars so any help is appreciated .

Thanks for both your help and took Austin 7 advise and sent his email to the company doing the repairs ,glad to say it looks like all is well but quite a saga  and to be fair to the company spent WAY  more time than I was billed for.

As you can  see from my posts it was originally diagnosed by RAC  as an ABS sensor this was replaced but fault still there ...   all the 5 lights still on and ESC  and bent light function   fault lights on info screen. Tec then opened up harness to see if copper wire in loom was broke all ok .Next step a new reluctor ring  was suspect so went for a new SKF wheel bearing complete  as this was the next possible cause of problems  ..success we thought all lights out went for a run still ok then came back and took me out to show  it was clear within 100 yds brake ABS and all lights on again and an intermittent fault with hard pedal kicking in the ABS .  The ironic think is when lights all on car drove great when all lights where off got this vibration through pedal .Tec suspected it may be the ABS MODULE its self hope not that s a £800  part but phoning round asked loads of Skoda guys never heard of it in all there time .So booked  back in again for another days look ,took on board battery situation although showing 12.8. 13 resting he put in new  battery to try    right away power steering sign and bulb signs went out . next was to check the 32 pin plug going into ABS MODULE tested loom on each pin and discovered a communications breakdown so replaced a new cable direct to NSF sensor ...all  lights out and car seems to be all ok and all work is warranted for a year  If this had been into  a main dealer at £100+ an hour would have been a very costly repair as no diag tool was picking up a fault on module .hope you all  have fallen asleep reading this .this is why forums are so good lets others narrow down things .

2 minutes ago, kitchens said:

Thanks for both your help and took Austin 7 advise and sent his email to the company doing the repairs ,glad to say it looks like all is well but quite a saga  and to be fair to the company spent WAY  more time than I was billed for.

As you can  see from my posts it was originally diagnosed by RAC  as an ABS sensor this was replaced but fault still there ...   all the 5 lights still on and ESC  and bent light function   fault lights on info screen. Tec then opened up harness to see if copper wire in loom was broke all ok .Next step a new reluctor ring  was suspect so went for a new SKF wheel bearing complete  as this was the next possible cause of problems  ..success we thought all lights out went for a run still ok then came back and took me out to show  it was clear within 100 yds brake ABS and all lights on again and an intermittent fault with hard pedal kicking in the ABS .  The ironic think is when lights all on car drove great when all lights where off got this vibration through pedal .Tec suspected it may be the ABS MODULE its self hope not that s a £800  part but phoning round asked loads of Skoda guys never heard of it in all there time .So booked  back in again for another days look ,took on board battery situation although showing 12.8. 13 resting he put in new  battery to try    right away power steering sign and bulb signs went out . next was to check the 32 pin plug going into ABS MODULE tested loom on each pin and discovered a communications breakdown so replaced a new cable direct to NSF sensor ...all  lights out and car seems to be all ok and all work is warranted for a year  If this had been into  a main dealer at £100+ an hour would have been a very costly repair as no diag tool was picking up a fault on module .hope you all  have  not fallen asleep reading this .this is why forums are so good lets others narrow down things .