Hi all ,,,, my BAS/ESP came on took the car to the garage , they put the computer on witch indicated the sensor number 1 witch seams to be the top sensor on that box with all brake lines goin to it , is not rite ,
I think the code is C1141 and the computer said Sensor 1 194bar no foot on brake
Sensor 2 0bar no foot on brake
Sensor 1 194bar foot on brake
Sensor 2 60bar foot on brake hope this makes sense to you out there and just my be you have hade the same problem thanks a lot Mike Bailey

 

Makes sense, I show C1141 as "The Controller Antilock Brake (CAB) will set this DTC if the calculated ESP Brake Pressure Sensor 1 is out of the specified range.". Sensor has three connections: 1) ground 2) sensor 3) 12v. Since 194 bar is about 2800 psi I suspect the wheels would be locked if true with foot off brake.


So my first thought would be to pull the connector and check the voltages and then for a short between the sensor and either 12v or ground. If ok then check the sensor for continuity pin 2 should show very low (near short) from either 12v or ground and some ohms reading to the other.


Unfortunately I do not have a sensor in my hand so cannot say what the readings should be.

See also http://www.ukcrossfires.co.uk/techni...-bit--bas--esp


ps my feeling is that you have a short either in the wiring or in the sender. What are the foot on and foot off values if you unplug sender 1 ?

 

Buy youself an OBD2 reader - around £16 delivered off Amazon and then you can look at the codes clear if necessary - I had this come up too after bumping down a particularly nasty ridge in roadworks - cleared when restarted engine later in day - not seen since

Good luck