When I was driving my Peugeot 407 petrol I suddenly experienced a loss of power. Luckily I was close to home and was able to drive the few meters back. When I started the car again the engine was chugging and shaking while idle. And when stepping on the gas pedal some random misfires would occur. I only have a cheap OBDII. It shows error P1340 and P1336, but ONLY after a misfire takes place.
I tried changing the spark plugs, but not difference yet. I have also tried to look under the hood to see any differences or visable problems, but the only thing I see is the engine moving more that usual when idle.
Anyone got an idea what could be wrong, and can point me in the right direction? I have had a depolution system faulty error come and go for a while, but I'm not sure if it's related.