In this issue, we will show the repair of three Opel Insignia B cars with different engines and problems:
1. Opel Insignia B with D20DT engine - electrical problem, errors with code U (U0121, U0104, U0131, etc.).
2. Opel Insignia B 1.6L diesel B16DTE - problems with the oil pump, low oil pressure error P0521.
3. Opel Insignia B 2.0L diesel B20DTH - strong knock A tension roller fell apart from under the hood when the engine was running.