I developed a problem last night when driving home. All was fine then all of a sudden i lost power and it sounded like the car was misfiring.
I got it home and checked the codes (i don't have vcds) but i got p246f.
I cleared the code and it has not come back again, i am not getting any fault code, but i still have the problem. Am i right in thinking it could be an injector?
It is fine for 5-6 seconds on start up then it starts misfiring again. the engine and exhaust shakes.
Thank you

Update:

I've plugged it into diagnostics and the o2 sensor is reading 0 volts. Am i right in thinking this is probably the problem? Does anyone know which one it will be? Thanks