2014 Partner Fault code C1325 (ABS-ESP)

[Phil the Fluter]

Hi Guys,

2014 Partner Horizon 1.6 Diesel Manual - Wheelchair adapted (for my daughter to use).

New to the forum, I've a good sense of humour and can take a joke and ribbing, I can give as good as I get and I'm not easily offended.

Needing a bit of advice and feedback for a fault code on the ABS ESP system, drove the car on Friday past with zero issues, the car was parked up for the weekend, Monday morning, on start up the ABS and ESP warning lights came on, didn't have time to check there and then so connected my Autel code reader when I returned home to find code C1325 "Permanent Fault - Rear Left wheel speed sensor Electrical Fault" on both the ABS and ESP systems (ABS 8.1 and ESP 8.1) both systems have the same code (understandably).

I checked the sensor with my multimeter and the resistance was 1.5 ohms, for the cost I decided to replace it with a new sensor to eliminate any potential issue, after fitting the new sensor the same code was generated once I started the engine (wasn't generated with just the ignition on), previous codes were cleared and I drove the car for about 18-20 miles to see if this helped, it was just the same, could the potential problem be the magnetic reluctor ring which doesn't look like it is in the first flush of life anymore, I will try to add photos to this post for all to see the ring (photos are before fitting the new Sensor).

point 1 - If the reluctor ring is to be replaced is it a separate part, if not is it part of the hub assembly?

point 2 - Am I missing something, obvious here, what should I be checking, could I have a bigger issue with the ABS pump, I have a Haynes Manual for the Partner, however, it doesn't have an electrical schematic for me to follow (I appreciate most car ABS systems are fundamentally the same, it's always good to have correct wiring colour/numbers to follow).

point 3 - Could you guys with more experience with French cars than myself hopefully give me an insight into any known issues I should be looking for, thank you all in advance, all and any advice gratefully received.

Phil

[GiveMeABreak]

I believe the magnetic ABS rings are now in the front wheel bearings, but pop your VIN up so I can relate the ABS code to your vehicle. Please post your VIN in full without spaces - it will be automatically masked from public view after submitting your post & will only be visible to staff.

[Phil the Fluter]

Hi Marc,

Thank you for the reply, my Vin is as follows.
VF3**************[VIN obfuscated, can be read by forum staff]

[GiveMeABreak]

Ok, so confirmed the rings do come as part of the front and rear hubs. Only the rear rings are showing as available separately.

[wheeler]

Is this an Allied conversion?
If so if i remember right some of the wiring to the rear of the vehicle is modified/re routed to accommodate the modified floorpan.
Might be worth pulling the wiring out of the plastic conduit & following it as far as you can.
If it was a reluctor ring fault i would expect the fault code to clear OK & not re appear until you actually start driving. The fact the fault comes back as soon as you switch the ignition on suggests to me the sensor circuit fault.

P.S. These sensors are a kind of hall effect sensor (despite only having 2 wires) so a resistance check is not a good indicator of sensor condition.

[Phil the Fluter]

Thank You Wheeler,
Once the code is cleared it stays off until the Engine is running, about 5-10 seconds then the warning lights come on, it stays on until they are cleared manually, the wiring is routed as on a un-adapted car, it basically just has the central section of the floor removed and a lowered ramp section fitted into the slot, everything is standard, if I refit the rear seats it is as a standard car, I will try to trace the wiring to ascertain if there's any sign of a short,

Also thank you Marc, do you have a Peugeot part number for the rings, I'm sure I've seen the rings on Ebay, can you or someone on the forum supply an ABS-EPS schematic for me to follow the wiring to and from the sensor, is there another forum user who lives in the AB32 area who has a code reader than can view ABS EPS live data so that I can see if there's anything actually being transmitted from the sensor/reluctor ring (I have an Autel ML629 which can clear the codes but won't read live data).

https://www.ebay.co.uk/itm/292826651975

[wheeler]

Once the code is cleared it stays off until the Engine is running, about 5-10 seconds then the warning lights come on, it stays on until they are cleared manually

Im my experience i would say this is not a reluctor ring fault, As i said above the car cant know there is an issue with the reluctor ring till the car actually starts moving.
To prove a point unbolt the other side rear sensor & just leave it dangling in the air, Clear the faults & start the engine, I bet no fault code appears for the other side unless you actually drive the car. It is actually telling you its an electrical fault, if it was the reluctor ring the fault would be worded along the lines of signal missing or signal coherence fault.
Also the reluctors generally dont fail unless the have had an impact, physical damage or debris stuck to them, metal dust can gather up over time & stick to the magnetic track, in this case though normally a careful clean up sorts it.
Its up to you but i think you will be wasting your money on the reluctor rings.
A wiring diagram is needed to check the continuity if that sensor circuit.

[Phil the Fluter]

Hi Wheeler,
Thank you, I think you're bang on, I've thought the same to be honest, I suppose I was hoping for the easy option of sensor or Reluctor ring, the thought of fault tracing the loom and associated equipment is a daunting task, I'm able to do it, but it can be a bit like chasing the wind, I remember my old boss saying that on the Railways to check for a short, stick a six inch nail in instead of the fuse and look for smoke I'll check it over this weekend (quickly adding - minus the 6 inch nail) I suppose the only positive is the fact it's permanent and not intermittent, thank you for the advice thus far, all I need now is a schematic of the ABS & ESP systems.

[Phil the Fluter]

Just wanted to give an update, fault codes are now clear, the fault was 2 fold, a corroded wire from the NSR wheel sensor to the inside of the the car, it was corroded at the conduit junction beside the handbrake cable retaining clamp, it was a beige wire, green verdigris showed the location when the cable was removed from the conduit, repaired and soldered and covered with heat shrink then insulation tape, the main issue was inside the car, I removed the NSF seat, lifted the carpet to find that a mouse had been living under it, it had chewed up some of the foam insulation under the mat plus some of the recycled padding, it had chewed through the insulation on some of the wiring, plus it had chewed through the sensor wire completely, hence no power, all repaired and cleaned out, I'm going to set a couple of traps inside the car on an evening to try to catch the little scroat, didn't for a moment contemplate that I would have to get a mouse trap for an ABS fault code generation car road tested and no further codes.
Thank you for the advice guys.

[Phil the Fluter]

corroded cable under the car repaired too.

[RichardW]

Pesky rodents! Good work on the fix.