As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLIMBING OUT OF SAN GOT VTK INDICATION AND MAP DSPLY ON CAPT'S ND AND CDU WENT BLANK. COMPLIED WITH QRH FOR FMC FAILURE AND DETERMINED (L) FMC FAIL. POSITIONED FMC SWITCH TO BOTH ON RIGHT AND CONTINUED SINGLE FMC OPERATIONS. GROUNDED - YES. PERFORMED B737-800 FIM 34-61 TASK 801 ON FMC 1 AND NO FAULT FOUND. POSITIONED FMC SWITCH BACK TO BOTH.