diff --git a/cloudkitty/collector/prometheus.py b/cloudkitty/collector/prometheus.py
index 8217fef3..cc3adcb3 100644
--- a/cloudkitty/collector/prometheus.py
+++ b/cloudkitty/collector/prometheus.py
@@ -219,6 +219,11 @@ class PrometheusCollector(collector.BaseCollector):
         except PrometheusResponseError as e:
             raise CollectError(*e.args)
 
+        if res['status'] == 'error':
+            error_type = res['errorType']
+            error_msg = res['error']
+            raise CollectError("%s: %s" % (error_type, error_msg))
+
         # If the query returns an empty dataset,
         # return an empty list
         if not res['data']['result']:
diff --git a/releasenotes/notes/prometheus-error-8eab9f1793c2280c.yaml b/releasenotes/notes/prometheus-error-8eab9f1793c2280c.yaml
new file mode 100644
index 00000000..4f419092
--- /dev/null
+++ b/releasenotes/notes/prometheus-error-8eab9f1793c2280c.yaml
@@ -0,0 +1,5 @@
+---
+fixes:
+  - |
+    Raises a ``CollectError`` exception with error details when a Prometheus
+    query returns an error status.