diff --git a/firmware/controllers/core/interpolation.cpp b/firmware/controllers/core/interpolation.cpp
index 2b91f4915b..720f710066 100644
--- a/firmware/controllers/core/interpolation.cpp
+++ b/firmware/controllers/core/interpolation.cpp
@@ -216,6 +216,15 @@ int findIndexMsg(const char *msg, const float array[], int size, float value) {
 		if (middle == left)
 			break;
 
+		if (middle != 0 && array[middle - 1] > array[middle]) {
+#if EFI_UNIT_TEST || defined(__DOXYGEN__)
+			firmwareError(CUSTOM_ERR_6147, "%s: out of order %f %f", msg, array[middle - 1], array[middle]);
+#else
+			warning(CUSTOM_ERR_6147, "%s: out of order %f %f", msg, array[middle - 1], array[middle]);
+
+#endif /* EFI_UNIT_TEST */
+		}
+
 		if (value < array[middle]) {
 			right = middle;
 		} else if (value > array[middle]) {