Do you have to take off the oil filter to replace an oil pressure switch?And if not where does the switch have to go??
Just found this wire disconnected with a long around 30cm lead attached going in under area to the right of the dipstick under near air insert housing. In pic it is wire at top closest the dipstick of the 3 together. Also Check Engine and Epc light are still on after all other lights go off once I turn Ignition once. They also come on occasionally while driving and cause rpm to go below 3000rpm. Code P0321 also showed up in a diagnostic it was the only code showing. Cheers