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© 200438 1-13 UPEC fault codes UPEC DAVIE XD diagnostics manual 2 56-13 Irregular engine running detected by the ECU due fuel leak of injector pipes of cylinders 1, 3 - defective/clogged injectors of cylinders 1, 3 - air in fuel system - internal leakage of pump units of cylinders 1, - clogged injector pipes of cylinders 1, 3 and 6 - too low a combustion pressure in cylinders - Irregular engine running and reduced 56-14 Irregular engine running detected by the ECU due fuel leak of injector pipes of cylinders 3, 5 - defective/clogged injectors of cylinders 3, 5 - air in fuel system - internal leakage of pump units of cylinders 3, - clogged injector pipes of cylinders 3, 5 and 6 - too low a combustion pressure in cylinders - Irregular engine running and reduced 56-15 Irregular engine running detected by the ECU due fuel leak of injector pipes of cylinders 1, 3, 5 - defective/clogged injectors of cylinders 1, 3, - air in fuel system - internal leakage of pump units of cylinders 1, - clogged injector pipes of cylinders 1, 3, 5 - too low a combustion pressure in cylinders - Irregular engine running and reduced 57-1 Irregular engine running detected by the ECU due fuel leak of injector pipe of cylinder 2 - defective/clogged injector of cylinder 2 - air in fuel system - internal leakage of pump unit of cylinder 2 - clogged injector pipe of cylinder 2 - too low a combustion pressure in cylinder 2 - Irregular engine running and reduced Fault code Fault code description with possible cause Symptom |