diff --git a/phosphor-regulators/src/phase_fault.hpp b/phosphor-regulators/src/phase_fault.hpp
index fbcb255..18597c7 100644
--- a/phosphor-regulators/src/phase_fault.hpp
+++ b/phosphor-regulators/src/phase_fault.hpp
@@ -15,6 +15,8 @@
  */
 #pragma once
 
+#include "error_history.hpp"
+
 #include <string>
 
 namespace phosphor::power::regulators
@@ -51,6 +53,29 @@
 };
 
 /**
+ * Returns the ErrorType that corresponds to the specified PhaseFaultType.
+ *
+ * The ErrorType enum is used with the ErrorHistory class.
+ *
+ * @param type phase fault type
+ * @return error type
+ */
+inline ErrorType toErrorType(PhaseFaultType type)
+{
+    ErrorType errorType;
+    switch (type)
+    {
+        case PhaseFaultType::n:
+            errorType = ErrorType::phaseFaultN;
+            break;
+        case PhaseFaultType::n_plus_1:
+            errorType = ErrorType::phaseFaultNPlus1;
+            break;
+    }
+    return errorType;
+}
+
+/**
  * Returns the name of the specified PhaseFaultType.
  *
  * @param type phase fault type
diff --git a/phosphor-regulators/test/phase_fault_tests.cpp b/phosphor-regulators/test/phase_fault_tests.cpp
index 5c18add..bbe0003 100644
--- a/phosphor-regulators/test/phase_fault_tests.cpp
+++ b/phosphor-regulators/test/phase_fault_tests.cpp
@@ -13,12 +13,20 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+#include "error_history.hpp"
 #include "phase_fault.hpp"
 
 #include <gtest/gtest.h>
 
 using namespace phosphor::power::regulators;
 
+TEST(PhaseFaultTests, ToErrorType)
+{
+    EXPECT_EQ(toErrorType(PhaseFaultType::n), ErrorType::phaseFaultN);
+    EXPECT_EQ(toErrorType(PhaseFaultType::n_plus_1),
+              ErrorType::phaseFaultNPlus1);
+}
+
 TEST(PhaseFaultTests, ToString)
 {
     EXPECT_EQ(toString(PhaseFaultType::n), "n");