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C4 - DS4 Owners :: Forums :: Citroen C4 Picasso and Grand C4 Picasso (B78) 2013 onward :: C4 Picasso and Grand C4 Picasso (B78) Problems and Issues
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Any thoughts before on gearbox fault before I sell my dead 2014 grand picasso
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Author Post
Chumpo77   
Tue Apr 09 2019, 05:43pm
Member No: #53399
Joined: Mar 23 2019
Location: Northwich
 Good evening, I’m after some help if possible? I have a 2014 c4gp 1.6 exclusive ETG6 and have had 8 months of happy driving until last weekend when the car jerked while moving from 3rd to 4th gear initially I thought nothing of it until I stopped and when it started again it was really jerky in all gears so I pulled into the petrol station and the gearbox faulty sign came up and the service light came on , I couldn’t move the car as the gears didn’t seem to engage. I called the AA and the guy was so negative he just said he’d seen hundreds of French cars do the same, he cleared the faults without reading them and said it would cost me thousands to repair ( I don’t have hundreds let alone thousands) anyway he towed me home and helped me up the driveway and he said i needed specialist software to access the gearbox ECU. Anyway after browsing forums I decided to get an elm327 and purchased fap and have managed to get the following fault code p1739, p1830 and u2003. Has anyone ever come across this sequence before? Thanks in advance it's the school holidays and I'm off work with no where to go .
rusky   
Wed Apr 10 2019, 01:49am
Member No: #27768
Joined: Oct 13 2012
Location: Hove
 I would check the connectors on the gearbox to start with.

Click the red link in your post for one of the codes.
iscom   
Wed Apr 10 2019, 02:36am
Member No: #20936
Joined: Jul 21 2011
Location: Ireland Fermanagh & Galway
 Sounds like the AA guy is a Brexit fan
Richard_C   
Wed Apr 10 2019, 01:47pm
Member No: #46470
Joined: Oct 11 2016
Location: Cambridge
 If its a software problem it might be worth disconnecting the battery, enjoying a slow coffee while everything forgets what it was doing, then reconnecting. Long shot but free.
iscom   
Wed Apr 10 2019, 02:18pm
Member No: #20936
Joined: Jul 21 2011
Location: Ireland Fermanagh & Galway
 Did you ever see the episode of wheeler Dealer where they bought a Porsche with a faulty auto gearbox but Edd China discovered it only needed topping up with gear box fluid, then it worked perfectly . . . Just an idea
FrankBullitt   
Wed Apr 10 2019, 02:44pm

Member No: #19238
Joined: Apr 12 2011
Location: Cambridgeshire
 I’d be checking the actuator fluid, connections for the gearbox and also the cars battery - gearbox failure is usually indicated by a whining noise, this sounds like a fault that with a bit of effort could be traced.
Chumpo77   
Thu Apr 11 2019, 04:50am
Member No: #53399
Joined: Mar 23 2019
Location: Northwich
 Thanks all, the actuator fluid looks ok however the cable that plugs into the gearbox is really dirty with oil, access is a nightmare by the looks of it though to take it out and clean it, I will try though and then maybe drop the gear oil and gauge how much has leaked out and then refill with fresh gearbox oil and I know I will still have a potential leak to repair but for the cost of £15 worth of oil it will confirm it that's the cause.
Chumpo77   
Fri Apr 12 2019, 05:39pm
Member No: #53399
Joined: Mar 23 2019
Location: Northwich
 Anyone know the best way to access all the wiring loom connections? From the top or do I need to remove the underside covers? Sorry if I sound thick.
Chumpo77   
Tue Apr 16 2019, 11:57am
Member No: #53399
Joined: Mar 23 2019
Location: Northwich
 Diagnostics done today, confirmed as Clutch.Going to sell it as it is as my wife will never trust it again.

Thanks again
 

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