Coil circuit malfunction

[dha89]

So my check engine light has been on and I recently put a scanner on it and it shows 5 codes. It has the coil primary/secondary circuit malfunction for every coil. A B C D and E. I recently changed the coils and spark plugs because of this issue but it did not resolve the issue. Anyone have any idea on other things to check. I checked the wires from the coils all the way down to where they hit the main harness and they seem ok.

[abscate]

Did you clear codes after the replacements?

Measure the battery voltage at each coil and the battery voltage at the battery. Compare.

Fault trace differences by tracking back from coils.

I recommend either Volvo or Bosch coils only , not from ebay