good morning WE HAVE A MAZDA CX-5 YEAR 2015 MOTOR JMZKEN92800327385 2191 CC , 129 KW GASOLINE KM 140000 WITH DISPLAY MESSAGE : ELECTRICAL SYSTEM INSPECTION REQUIRED . THE CAR IS WORKING FINE EVERYTHING WORKS MASSES ALTERNATOR BATTERY START STOP NEW . ERROR P258B DEPRESSION PUMP CONTROL CIRCUIT OUT OF NOMINAL RANGE. MIL INDICATOR LIGHT OFF THE DEPRESSOR PULLS - 0.9 BAR AT IDLE AND DURING ACCELERATION TO DROP TO -0.6 JUST AFTER BRAKING AND THEN RECOVER QUICKLY. WE AWAIT YOUR KIND ADVICE THANK YOU