Managed to fix it a couple of months ago, forgot to let you all know. As DJmorgan mentioned it was the same problem with mine. A corroded wire which was slightly attached and was hard to tell.
Was an easy fix after all, if anyone is having problems send me a pm will help you!
Thanks,
Please help me
I also have this problem
What i need to do?
I am getting the error: C156C 92.
I was getting the other error related the left actuator (C1561 1E), so I replaced the actuator, now I am getting the error C156C 92, if I move the wiring around it goes away when I clear the error, but when I try and apply the brake it comes back on, but doesn't come on releasing the electronic brake. The 2nd connector in the plug on the actuator has lots of green on it.
Do I need to look for some breaks in the wire around the wheel?
These vehicles are notorious for bad wiring - breaks and shorts in the wires under the engine fuse box in the large looms there. Some investigative work is needed on a dry day. They use poor quality wiring and bundle too many wires together, which can cause a strain on some of the wires - especially the outer wiring that can lead to short circuits.
Please note, I'm no longer active on the Forum, so won't respond to messages.
Just found this thread and the original poster had the same Fault Codes mines has come up with - Can anyone tell me where these wires are hidden/located and how easy it was to rewire?
Got a reply on this issue so i will continue to check the wiring:
GiveMeABreak wrote: At present with only the error codes you have supplied, they be
C0037 01 Rear left wheel speed sensor : Malfunction of the circuit
C0037 11 Rear left wheel speed sensor : Short circuit to earth
C0037 12 Rear left wheel speed sensor : Short circuit to positive
C0037 2F Rear left wheel speed sensor : Signal incorrect
C0037 62 Rear left wheel speed sensor : Lack of coherence of the signal
C0037 68 Rear left wheel speed sensor : Air gap problem (clogging)
C0037 95 Rear left wheel speed sensor : Non-coherent type of wheel speed sensor
C0037 96 Rear left wheel speed sensor : internal fault
It's the same as above for the rear right.
So I would focus on the wiring and connections / harness, and to make sure you haven't knocked or damaged the speed sensors if these have been removed - as they are ultra sensitive to knocks.
I suspect it is wiring / connection related as unusual for 2 sensors to go at once.
I had repaired the wiring my self to fix the handbrake issue. However after a few weeks of working it is now failing again and i suspect the cabling is corroded further up to where i fixed it.
My ABS is still failing and i suspect that i will need to replace the whole harness going to the back to fix the ABS issue and the the handbrake.
Does anyone know where i can get this harness and how difficult is it to replace?
Big thanks for posting the info about fixing this brake fault! My mechanic in Berlin / Germany suggested replacing actuators and doing all kind of other expensive things before I gave him a hind about a possible wiring problem, and we found a fixed a corroded wire in the area of the rear wheel arch which resolved the problem!
I have just experienced the same problem on my 2015 Grand Picasso.A sudden failure of the parking brake on both auto mode and via the switch. My diagnostic hives The C1562 error code but having stripped back the cables under both rear wheel arches they appear to be ok. I want to check out the continuity of these cables with my multimeter.Can anyone tell me where they run to in the engine compartment or is there an intermediate connector that I can check them from.Many thanks. Stuart W.
I've encountered the same issue several times on my 2014 1.6 grand picasso.
The park brake will not apply at all and i had park brake symbol flashing along with a couple of other orange warning lights that i've forgotten now.
The fault C1561 says Electronic park brake (FSE) -R/H Actuator (Present) accompanied by C156C Electronic park brake (FSE) Actuator sensors (temporary).
I borrowed a code reader called a Launch CRP123, fantastic bit of kit once you work out which car to select as the obvious C4 options wouldn't read my car.
Eventually I found that I had to select the C5 option and then the very bottom ecu variant.
Now i was able to access everything from steering angles, wheel speeds, switch positions etc...
I ruled out the handbrake switch by operating it and watching what position it was in on the code reader, the same applied for the footbrake switch.
I ruled out any ABS issues that I had experienced before by getting someone to drive the car whilst I read the wheel speeds (if the ABS is faulty the car doesn't know if the wheels are moving so therefore will not allow the handbrake to be applied).
Anyway to cut along story short i disconnected the wiring from the brake caliper and ABS sensor on the O/S/R, pulled it out in front of the axle, stripped out the wiring
from the conduit and found a bulge in the orange wire for the brake caliper, cut out soldered and put on heatshrink refitted wiring and cleared the fault memory.
Now all working fine again.
If you have fixed the fault it should work and you should have no warning lights on, if the warning lights remain on it is not a case of clearing the fault memory as there IS still a fault.
I cannot stress how good the code reader is and how crud the wiring is.
PLEASE NOTE THAT ON THIS ENGINE SIZE LEAVING THE VEHICLE IN GEAR WILL NOT KEEP IT ON A HILL, IT WILL ROLL AWAY (speaking from experience ).
Mexico14 wrote: 31 Jan 2023, 15:20
Test post. I can't see page 2 of the posts on this thread.
They are visible for me.
If you are on a phone, restart it.
On a computer, clear your cache and possibly reboot but first reload the page with Ctrl+F5.
- sometimes a little investigation can save you a, lot of money replacing parts unnecessarily.
