Hello together, have a small / big problem with my C4 for a short time. When speeding up / speeding up the engine is quite strong. If you go off the gas for a short time, you can continue normally. If you don’t do this, it will go through completely and lose power and the engine control light starts. After a restart it will run “normal”. I then read out the error, P1339 – Ignition setter 3. Piston I changed the spark plugs. The old saw d abei already very black out. vehicle: C4 II 2011 – 1.6 155 THP Did someone already have this similar and found a solution for it? On the Internet there are already some threads, but now not necessarily related to Citroen. Otherwise, what would be the next logical approach here? I thank you already for any help!