Hi, I scanned a 02 Octavia ( 2002 1.6 petrol ) that is running rough with vcds. It is missing under acceleration Two faults came up. Fault 1 is system too rich. Fault 2 is g40 cam position sensor signal too low. Am I best to change the cam sensor or can I test it? Thank you.
first clear the codes and see if they come back, and scan thru the ecu measuring blocks to see all your sensor inputs in real time. keep an eye for any that are returnign funny values, such as a temp sensor which is obviously higher or lower than usual etc