2016 c4 grand Picasso has been serviced annually at main dealer and just had its second MOT. Getting 'engine fault. the filter can clog. Unfortunately these type of issues are common on newer "clean" diesels of all brands. Citroen will pay or contribute to the fix it ends up being the add blue tank/ecu. Depending on age and mileage. Citroen C4 and DS4 Online Support with user help forums, FAQ's and Technical guides C4 Grand Picasso VTR+; 1.6HDI; EGS; 3.5 years old. Never had any other problems austinbob : Tue Sep 14 2010, 07:19am Member No: #1554. Joined: Nov 12 2007 Location: Farnborough Hampshire. Problem turned out to be a faulty electronic fusebox and hydraulic pump. Tue Dec 28 2010, 04:55am. Member No: #15767. Joined: Oct 05 2010. Location: Verona. Hi all, I've recently bought a used C4 Picasso 1.6Hdi EGS from a local Citroen dealer. On this car there is an annoying problem: there is no warning for driver's unfastened seatbelt: passenger's one works flawlessly. The largest English language online Citroen C4 and DS4 Owners Help and Support site incorporating C4owners.co.uk C4owners.com C4GP.org and DS4owners.org. C4 Picasso and Grand Picasso - PRE 2013 only :: C4 Picasso Problems and issues << Previous thread | Next thread >> C4GP Outside air temperature sensor C4 - DS4 Owners:: Forums:: Citroen C4 Picasso and Grand C4 Picasso (B78) 2013 onward :: C4 Picasso and Grand C4 Picasso (B78) Problems and Issues I have a 2014 C4 grand picasso with a clucth fault where it does not come up fully but is only half way. but was having problems with the clutch pedal for over a year prior to that. A year with Citroen's family MPV We test the seven-seat Grand Picasso Every flaw uncovered, every strength praised. Month 12 running a Citroen C4 Grand Picasso: the end of our year-long test Once the leak has been found, this must be closed again by replacing the respective component. 4. Dirty evaporator. Dirty evaporator can also be the reason for AC problems on your Citroen C4. Cabin air filter captures most of the dirt or other airborne particles, but some escape and fall on to the evaporator. I'm having a one-month old Grand C4 with the 1.6 BlueHDI 120bhp engine and have similar issues even when the car has warmed up. Sometimes, it just seems to take longer than it should before it upshifts from 1st to 2nd gear and from 2nd to 3rd gear and when it does, the jerk is quite obvious. Problem is accentuated on an incline. Citroen C4 and DS4 Online Support with user help forums, FAQ's and Technical guides C4 - DS4 Owners:: Forums:: C4 Picasso and Grand Picasso - PRE 2013 only :: C4 Picasso Problems and issues << Previous thread | Next thread >> EGS jerky and unpredictable Oh and my car is a 2.0 HDI C4 Grand Picasso was 138bhp now about 174 ish bhp Engine. The petrol engines in the C4 Picasso range are smooth and fairly punchy units, but economy predictably suffers; that's why the higher-output (113 or later 118bhp) 1.6 BlueHDi diesel engine lqVOvIx.