Re: C4 Grand Picasso gearbox fault. by GiveMeABreak » Tue May 03, 2022 10:34 am. Yes, but codes are vehicle and system specific. So without your VIN I can't match it up or confirm if it is relevant to your specific vehicle. Your VIN is automasked on post submission, so just type it up as only staff can see it. Sun 20 Sep 2020 09:28. Citroen C4 Picasso - Eat gearbox - John F. Do not confuse the EAT6 gearbox (Efficient Auto Transmission) with Peugeot's earlier problematic EGC box. The EAT6, now superseded by the EAT8, is a reliable TC gearbox based on the extremely successful ZF 6HP series. It is made by Aisin. We have a 57 EGS C4 Picasso with only 31000 miles and have had terrible trouble over the years. A couple of years ago the computer on the gearbox failed and we had to have it replaced ( 6 months out of warranty). And for the past year we have had a juddering stuttering gear change into 1st and 2nd gear. It's not 'Auto transmission fluid'. It's only used for the actuator as the EGS box is a manual with electronic control, not a full auto gearbox. At this stage I'm not sure how the pipe is attached though. I know there are posts somewhere about gearbox issues due to the lack of fluid, but where.. I have a problem with my Citroen C4 Grand Picasso (2014) piloted gearbox. This problem came out nowhere without any warning. After I've been driving the car for about 60 miles without any problems I parked it. In a few seconds, I tried to start the engine and move the car. The car didn't start and on the car display appeared Gearbox fault: Have Hi I have a 09 grand picasso auto and have the same problem, just wondering did you do the hard reset and did it work? Jump: C4 The Garage ICE / Sat Nav/Bluetooth etc. Car Care Technical Questions Market Place The Lounge Mods and Styling, Chassis, lowering, wheels etc. Interior and lights C4 Coupe and Hatch (pre 2011) Problems? chrisw6152. Thu Aug 23 2012, 04:23pm. Hi all thanks for the advice so far. in the end, I got the fluid from a main dealer £30. Got the new high pressure hose (also main dealer) £25.64 +VAT. The new hose is a modified part, it has a harder plastic piece at the top and has heat shield tape around it. Hi Gintoxic. what was the final outcome of the repair ? My C4 Grand Picasso displayed "gearbox faulty" last week setting the car into NEUTRAL as it dropped out of gear. Intermittently it would drive (so logic said that something else was causing the box not to drive not the box itself). EDIT the noise is coming somewhere near the gearbox area after 5-10 secs it stops.Then i start the car and warning lights ESP-Auto brake fault. Dave_Retired. Sun Sep 13 2015, 10:57am If everything looks good, start the vehicle and turn the wheels all of the way to the left and then to the right. Do this while the vehicle is in park and repeat at least 5 times. This will work out any air in your steering system. If the problem persists then the power steering pump may need to be replaced. Posted on May 24, 2009. LNgZ.