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C4 - DS4 Owners :: Forums :: C4 Picasso and Grand Picasso - PRE 2013 only :: C4 Picasso Problems and issues

Gearbox fault

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Author Post
Ed_c41987   
Mon Jun 01 2026, 05:09pm
Member No: #63595
Joined: Jun 01 2026
Hi all newbie here. I've got a c4 picasso 2009 flags up gearbox fault can go a week or couple days and sometimes goes into neutral other times it goes straight off and carry on driving. Fault on scanner is.. clutch actuator position signal fault primary circuit short circuit to ground. Any suggestions what I could do with this or try anyway I have no clue where to start thanks car is the 6 speed semi automatic
Ap0qalypto   
Mon Jun 01 2026, 05:40pm
Member No: #52161
Joined: Sep 21 2018
Location: Republic of Serbia
Going into neutral can be related to hydraulic pump. Most common issue us electric motor which is creating pressure for clutch. You need proper PSA software like Diagbox or Lexia to correctly read parameters. When changing electric motor, its a good opportunity to also change hydraulic oil in the pump.
 

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