What was found
WHILE MANEUVERING, THE ENGINE INDICATORS ON THE G1000 HAD RED X'S ON THE FOLLOWING INSTRUMENTS, TACHOMETER, FUEL FLOW, OIL PRESSURE, OIL TEMP, EGT, VAC, FUEL QUANTITY AND ELECTRICAL. THIS LASTED FOR ABOUT 10-15 MINUTES. GAVE ME ENOUGH TIME TO FLY BACK TO KBKX AND LAND. UPON PULLING OFF THE RUNWAY, EVERYTHING CAME BACK AND WORKED LIKE NORMAL. INFORMED MAINTENANCE OF THE ISSUE.