Citroen c4 grande picasso

[radiosolutions]

2007 reg, 1.6 hdi. Engine management light on, also esp and handbrake fault comes on with the egr fault. Fitted genuine egr and programmed but fault still exists. Changed under bonnet fuse box, engine ecu, checked wiring from egr all fine. Checked wiring behind battery coming off fuses on top of battery ,all fine. The 3 faults are interlinked in some way, can anyone help.

[autoden]

Had this before and it was the EGR but as you have fitted new I would recheck wiring. First check 5v reference.

[radiosolutions]

Wiring been checked m8, 5v reference is fine.

[5000]

this car have a sensor in the turbo hastgate? I had a peugeot that had many fault codes and it was this sensor creating problems in the +5volt line

[radiosolutions]

Checked all sensors on 5v line, all ok. Strange thing is on putting ignition on, handbrake motor makes a noise,then stops,it then makes another noise,at this point handbrake fault appears on dash. Can anyone help

[MJRVR]

For hand brake Check for corroded wiring connector block under the passengers seat.

[goran13]

I had the same problem, it was esp "abs" unit, esp unit it confuse all system. cheers.