diff --git a/phosphor-power-supply/psu_manager.cpp b/phosphor-power-supply/psu_manager.cpp
index 76838dc..8e1be6a 100644
--- a/phosphor-power-supply/psu_manager.cpp
+++ b/phosphor-power-supply/psu_manager.cpp
@@ -395,10 +395,12 @@
             }
             else if (!psu->isFaultLogged() && psu->isFaulted())
             {
+                // Add STATUS_WORD and STATUS_MFR last response, in padded
+                // hexadecimal format.
                 additionalData["STATUS_WORD"] =
-                    std::to_string(psu->getStatusWord());
+                    fmt::format("{:#04x}", psu->getStatusWord());
                 additionalData["STATUS_MFR"] =
-                    std::to_string(psu->getMFRFault());
+                    fmt::format("{:#02x}", psu->getMFRFault());
                 // If there are faults being reported, they possibly could be
                 // related to a bug in the firmware version running on the power
                 // supply. Capture that data into the error as well.