diff --git a/selfdrive/locationd/helpers.py b/selfdrive/locationd/helpers.py
index a3e3ae4a8..dd8b5dfb9 100644
--- a/selfdrive/locationd/helpers.py
+++ b/selfdrive/locationd/helpers.py
@@ -80,6 +80,14 @@ class PointBuckets:
   def is_valid(self) -> bool:
     individual_buckets_valid = all(len(v) >= min_pts for v, min_pts in zip(self.buckets.values(), self.buckets_min_points.values(), strict=True))
     total_points_valid = self.__len__() >= self.min_points_total
+
+    if not individual_buckets_valid:
+      for bounds, (bucket, min_pts) in zip(self.x_bounds, zip(self.buckets.values(), self.buckets_min_points.values())):
+        if len(bucket) < min_pts:
+          print(f"Bucket {bounds} is invalid: has {len(bucket)} points, requires at least {min_pts} points.")
+    if not total_points_valid:
+      print(f"Total points are invalid: has {self.__len__()} points, requires at least {self.min_points_total} points.")
+
     return individual_buckets_valid and total_points_valid
 
   def is_calculable(self) -> bool: