I post the car specs below:
Engine: 1.6L petrol 113HP (euro V EU spec)
Transmission: 5 speed manual
Mileage: 84 000 km (52 000 miles)
Trim level: LS
Country: EU (state: romania)
The issue I'm facing is that randomly the car hesitates, and sometimes it is running rough...
So at first check engine light popped on. My ODB-II reader (cheap one) said its P0141, after which I changed the original downstream oxygen sensor with a new cheapish part (looked a little different, but rolled in to the socket just fine). Basically I used this part: Lambdatunnistin STARK...
For the last few months (since around October) I have been occasionally getting the P0420 CEL code. I currently have 104,000 miles on the odometer.
The only service I’ve done to the vehicle is replacing the water outlet, the return line from the outlet to the coolant overflow tank...