M marypostel1 New member Nov 20, 2014 #1 What do these codes mean and where should I begin first? P0306 P0420 C1201 C1340
9 91'4bee New member Nov 20, 2014 #2 po-306...cylinder 6 misfire PO-420... Catalytic converter Inefficiency C1201...engine control malfunction...should be because of check engine light. C1340...ADD system Malfunction or center diff lock malfunction. (VSC light) Google is one hell of a tool if you have the code numbers OBD-Codes OBD-II Trouble Codes - DTC Codes Car Repair Where to start?... In my opinion clear the codes and see what comes back Last edited: Nov 20, 2014
po-306...cylinder 6 misfire PO-420... Catalytic converter Inefficiency C1201...engine control malfunction...should be because of check engine light. C1340...ADD system Malfunction or center diff lock malfunction. (VSC light) Google is one hell of a tool if you have the code numbers OBD-Codes OBD-II Trouble Codes - DTC Codes Car Repair Where to start?... In my opinion clear the codes and see what comes back
