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2.7.7.18. Conditions of storing of codes of malfunction (P0131 code)

After a system entrance to the closed cycle of regulation and after 3 min. operation of the EBU engine during 0,5 with checks tension of a signal of the back oxygen sensor. If in two cycles of driving tension of a signal of the back oxygen sensor is lower than 50 mV, EBU gives the P0137 code and the control lamp of malfunction of a control system of the engine joins. A conclusion of this code indicates extremely low voltage of a signal of the back oxygen sensor.