diff --git a/src/TachSensor.cpp b/src/TachSensor.cpp
index c375dbf..2c48cc9 100644
--- a/src/TachSensor.cpp
+++ b/src/TachSensor.cpp
@@ -183,8 +183,7 @@
 
 void TachSensor::checkThresholds(void)
 {
-    // WA - treat value <= 0 as not present
-    bool status = false;
+    bool status = thresholds::checkThresholds(this);
 
     if (redundancy && *redundancy)
     {