bp0777What is the Cost to Diagnose the Code? Labor: 1.0. To diagnose the P0777 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repairAudi Fault code P0777 My Audi A3 2.0T shows fault code P0777 and i suspect faulty wiring to the Oil level sensor as i found it damaged so can someone help me with colour codes for the 3