diff --git a/RebuildBdd/Checkup/check-postgresql.sh b/RebuildBdd/Checkup/check-postgresql.sh
index a6e4428..3473922 100755
--- a/RebuildBdd/Checkup/check-postgresql.sh
+++ b/RebuildBdd/Checkup/check-postgresql.sh
@@ -45,6 +45,26 @@ require_cmd() {
   command -v "$1" >/dev/null 2>&1
 }
 
+collect_postgres_diagnostics() {
+  local diagnostics=""
+
+  if "$SUDO_BIN" systemctl status "$POSTGRES_SERVICE_NAME" --no-pager >/dev/null 2>&1; then
+    diagnostics+="systemctl status ${POSTGRES_SERVICE_NAME}: OK; "
+  elif require_cmd systemctl; then
+    diagnostics+="systemctl status ${POSTGRES_SERVICE_NAME}: $( "$SUDO_BIN" systemctl status "$POSTGRES_SERVICE_NAME" --no-pager 2>/dev/null | tail -n 5 | tr '\n' ' ' ); "
+  fi
+
+  if require_cmd pg_lsclusters; then
+    diagnostics+="pg_lsclusters: $(pg_lsclusters --no-header 2>/dev/null | tr '\n' ' '); "
+  fi
+
+  if require_cmd journalctl; then
+    diagnostics+="journalctl: $( "$SUDO_BIN" journalctl -u "$POSTGRES_SERVICE_NAME" -n 10 --no-pager 2>/dev/null | tr '\n' ' ' ); "
+  fi
+
+  printf '%s' "${diagnostics% }"
+}
+
 start_postgres_service() {
   if "$SUDO_BIN" systemctl start "$POSTGRES_SERVICE_NAME" >/dev/null 2>&1; then
     return 0
@@ -116,7 +136,9 @@ fi
 
 if ! "$SUDO_BIN" systemctl is-active --quiet "$POSTGRES_SERVICE_NAME"; then
   log "Démarrage du service PostgreSQL..."
-  start_postgres_service || fail "impossible de démarrer PostgreSQL"
+  if ! start_postgres_service; then
+    fail "impossible de démarrer PostgreSQL. $(collect_postgres_diagnostics)"
+  fi
 else
   log "Service PostgreSQL déjà actif."
 fi