diff --git a/phosphor-regulators/src/error_history.hpp b/phosphor-regulators/src/error_history.hpp
index 8a2a011..f5afdae30 100644
--- a/phosphor-regulators/src/error_history.hpp
+++ b/phosphor-regulators/src/error_history.hpp
@@ -36,7 +36,9 @@
     internal = 3,
     pmbus = 4,
     writeVerification = 5,
-    numTypes = 6
+    phaseFaultN = 6,
+    phaseFaultNPlus1 = 7,
+    numTypes = 8
 };
 
 /**
diff --git a/phosphor-regulators/test/error_history_tests.cpp b/phosphor-regulators/test/error_history_tests.cpp
index 55f77f5..187c36e 100644
--- a/phosphor-regulators/test/error_history_tests.cpp
+++ b/phosphor-regulators/test/error_history_tests.cpp
@@ -22,7 +22,7 @@
 TEST(ErrorHistoryTests, ErrorType)
 {
     EXPECT_EQ(static_cast<int>(ErrorType::internal), 3);
-    EXPECT_EQ(static_cast<int>(ErrorType::numTypes), 6);
+    EXPECT_EQ(static_cast<int>(ErrorType::numTypes), 8);
 }
 
 TEST(ErrorHistoryTests, Constructor)
@@ -34,6 +34,8 @@
     EXPECT_FALSE(history.wasLogged(ErrorType::internal));
     EXPECT_FALSE(history.wasLogged(ErrorType::pmbus));
     EXPECT_FALSE(history.wasLogged(ErrorType::writeVerification));
+    EXPECT_FALSE(history.wasLogged(ErrorType::phaseFaultN));
+    EXPECT_FALSE(history.wasLogged(ErrorType::phaseFaultNPlus1));
 }
 
 TEST(ErrorHistoryTests, Clear)
@@ -46,6 +48,8 @@
     history.setWasLogged(ErrorType::internal, true);
     history.setWasLogged(ErrorType::pmbus, true);
     history.setWasLogged(ErrorType::writeVerification, true);
+    history.setWasLogged(ErrorType::phaseFaultN, true);
+    history.setWasLogged(ErrorType::phaseFaultNPlus1, true);
 
     EXPECT_TRUE(history.wasLogged(ErrorType::configFile));
     EXPECT_TRUE(history.wasLogged(ErrorType::dbus));
@@ -53,6 +57,8 @@
     EXPECT_TRUE(history.wasLogged(ErrorType::internal));
     EXPECT_TRUE(history.wasLogged(ErrorType::pmbus));
     EXPECT_TRUE(history.wasLogged(ErrorType::writeVerification));
+    EXPECT_TRUE(history.wasLogged(ErrorType::phaseFaultN));
+    EXPECT_TRUE(history.wasLogged(ErrorType::phaseFaultNPlus1));
 
     history.clear();
 
@@ -62,6 +68,8 @@
     EXPECT_FALSE(history.wasLogged(ErrorType::internal));
     EXPECT_FALSE(history.wasLogged(ErrorType::pmbus));
     EXPECT_FALSE(history.wasLogged(ErrorType::writeVerification));
+    EXPECT_FALSE(history.wasLogged(ErrorType::phaseFaultN));
+    EXPECT_FALSE(history.wasLogged(ErrorType::phaseFaultNPlus1));
 }
 
 TEST(ErrorHistoryTests, SetWasLogged)