C4 Picasso handbrake/ESP/ASR fault

**hezekiel** · 6th February, 2013, 12:49 PM

Hi,

I've got a C4 Picasso 1.6 HDi BMP 2008. Every time I power it up it displays "PARKING BRAKE FAULTY" and after a while "ESP / ASR FAULTY". Still everything works except for the automatic parking brake application and the service light is illuminated.

The only fault code that the ESP has is "ESP8.1 No communications with the engine management ECU Data invalid - Temporary - U1208".

It always shows up immediately even if erased with Lexia. It happens even with "key on engine off" so I guess it is not a matter of voltage dip during cranking. I have reset the BSI several times to no avail. Any clues?

**moppe** · 6th February, 2013, 07:10 PM

Morjens!
This might be stupid to ask, but have you reset the parking brake? I had the same messages, and the reason was offset parking b. Reset does not require Lexia, I guess I found instructions from user manual... I don't have the car anymore.

br
Teemu

**gyapi11** · 6th February, 2013, 07:23 PM

[QUOTE = hezekiel; 1863807] Szia,

Hi.I volt ilyen probléma. BSI kapcsolatok. Előfordulhat, hogy más probléma van. Kapcsolási rajzok C4 Picasso 1.6 HDI. pass pm

**hezekiel** · 16th February, 2013, 10:01 AM

Hi,

I removed all the BSI connectors and also the connector on the ABS pump/valve unit itself. Everything was fine, no oxidation.

I was probably giving misleading information in the first post: The fault U1208 can be erased and it stays away even if the power is cycled. Only starting the engine brings it back. I hooked up a battery charger to assist keeping the voltage up but it made no difference.

**gyapi11** · 16th February, 2013, 10:35 AM

Originally Posted by hezekiel

Hi,

I removed all the BSI connectors and also the connector on the ABS pump/valve unit itself. Everything was fine, no oxidation.

I was probably giving misleading information in the first post: The fault U1208 can be erased and it stays away even if the power is cycled. Only starting the engine brings it back. I hooked up a battery charger to assist keeping the voltage up but it made no difference.

Hi.May help

**hezekiel** · 19th February, 2013, 08:13 AM

Thanks gyapi! The failure mode I have is the least of 3 possible, and it is described in the document. Basically everything works except automatic engagement of handbrake and hill holder. I could live with it but the warning chime and failure messages flashing on the display after every startup is a no-no considering MOT or trading the car.

I measured the canbus line resistance at ESP unit, BSI and engine ECU. It was solid 120 ohms, and apparently the communications work most of the time since the fault is intermittent. It says that the system tolerates 500ms blackout in the comms before activating a trouble code. It could be due to low voltage during cranking, but hooking up the battery charger did not help. Anything else to do before I start swapping ESP units? Is it possible to update the controller software with Lexia?

**hezekiel** · 13th December, 2013, 09:40 AM

Still have this problem. Has anybody had any luck fixing such a fault?

**tarts1999** · 13th December, 2013, 10:24 AM

Check engine, bsi and esp ecus configuration.

**genius76** · 13th December, 2013, 10:46 AM

If u get this code from ecu check CAN wiring

**Meat-Head** · 13th December, 2013, 08:19 PM

1) Is there ANY faults in the Indain?
2) Google that code (i think) it will take you to an INFERIOR website with a photo of loom behind battery.
3) DO suggest ANY faults in the indain you fix, rumor states this can happen, abs/tc/handbrake as one, rumor states abs gets upset if indain has limp-dick mode

**hannul** · 8th February, 2016, 11:07 AM

Originally Posted by hezekiel

Still have this problem. Has anybody had any luck fixing such a fault?

Did you manage to fix this issue? I have same kind of problem in my C4.

**radiosolutions** · 8th February, 2016, 08:13 PM

On top of battery is a connector with 3 small wires, check these as they break and cause this fault

dont forget press thanks

**Meat-Head** · 9th February, 2016, 09:01 AM

Originally Posted by radiosolutions

On top of battery is a connector with 3 small wires, check these as they break and

You got a photo for future reference?

**hannul** · 10th February, 2016, 09:05 AM

My fault codes are:
U1305 Fault: absence of communication with the steering wheel angle sensor : No signal
C1310 Yaw sensor signal fault : internal fault

U1325 Fault: absence of communication with the gyrometer-accelerometer sensor : No signal
C1315 Transverse acceleration sensor signal fault : internal fault
C1502 Longitudinal acceleration sensor signal fault : internal fault

Display says "ESP/ASR faulty" and "Handbrake faulty".

Wiring problems? ESP/ASR/ABS ecu problem?

**Meat-Head** · 10th February, 2016, 08:52 PM

Err under them parameters, grab an xacto knife and cut a large hole in the center tunnel between t front seats.

legand has it (and can keep it) you got 4 wires, power & canbus.

see what yiu got bro, init