1995 Mercedes E320 (M104). Drivability issue under load. Starts and idles well. Low power, possible ignition miss or fuel issue. 16 pin connector, pulled codes from pin #8 and got:
35 02 rich limit, mix to lean
39 Inj short circuit cyl 2
42 inj short circuit cyl 3
47 inj short circuit cyl 6.

Oxygen sensor and CAT are new. Engine wiring harness is updated. Any suggestion on steps
To proceed with diagnosis?