J' ai pas trouvé grand chose concernant cet erreur mais je suis tombé là dessus :
"I performed the xclamp mod once, it worked but I used poor thermal paste so the
fans ran loud, so i redid the xclamp mod on the cpu only (being as the thermal
sensor fan control is in the CPU only) and I received this error code after, so
i redid the fix just on the CPU again, and it works perfectly now.
Side note: I found a washer stuck among the capacitors near the power input from
a prior xclamp fix, it may be possible that this washer caused this error code"
Donc à priori , il faudrait que tu démontes , remonte tes X clamps ..
Edit: 0223 --> E43