Need help on Fault Codes please

[dean-weston]

Hi all, I have just plugged a friends new 225 - 2004 into my USB OBD Scan and it brought up 3 codes -

P0301 - Cylinder 1 Misfire Detected
P0325 - Knock Sensor 1 Circuit Malfunction (Bank 1 or Single Sensor)
P0313 - Misfire Detected with Low Fuel

Now I understand the misfire could be caused by a faulty Injector in cylinder 1 (common issue ? ) but im unsure as the knock sensor fault code - If anyone can offer up and advice on this or all 3 of the faults? I would be more than great-full

many thanks in advance, Dean & Chris

[davelowe]

Capture the raw data - you should be able to reset the mis-fire counter and watch it rise as the engine runs. I'm not sure exactly what kit you would need to do this, as I tend to use quite a few different things. The fuel trim ought to give you some clues. As for the knock sensor problem, this might well be a by-product...