diff --git a/phosphor-power-sequencer/src/standard_device.cpp b/phosphor-power-sequencer/src/standard_device.cpp
index b49b67f..a11a9cc 100644
--- a/phosphor-power-sequencer/src/standard_device.cpp
+++ b/phosphor-power-sequencer/src/standard_device.cpp
@@ -92,10 +92,22 @@
     Services& services, const std::vector<int>& gpioValues,
     std::map<std::string, std::string>& additionalData)
 {
-    additionalData.emplace("DEVICE_NAME", name);
-    if (!gpioValues.empty())
+    try
     {
-        std::string valuesStr = format_utils::toString(std::span(gpioValues));
+        additionalData.emplace("DEVICE_NAME", name);
+        storeGPIOValues(services, gpioValues, additionalData);
+    }
+    catch (...)
+    {}
+}
+
+void StandardDevice::storeGPIOValues(
+    Services& services, const std::vector<int>& values,
+    std::map<std::string, std::string>& additionalData)
+{
+    if (!values.empty())
+    {
+        std::string valuesStr = format_utils::toString(std::span(values));
         services.logInfoMsg(
             std::format("Device {} GPIO values: {}", name, valuesStr));
         additionalData.emplace("GPIO_VALUES", valuesStr);
diff --git a/phosphor-power-sequencer/src/standard_device.hpp b/phosphor-power-sequencer/src/standard_device.hpp
index af7e29e..210494f 100644
--- a/phosphor-power-sequencer/src/standard_device.hpp
+++ b/phosphor-power-sequencer/src/standard_device.hpp
@@ -112,11 +112,10 @@
     /**
      * Store pgood fault debug data in the specified additional data map.
      *
-     * The default implementation stores the device name and all the GPIO
-     * values.  The GPIO values are stored as a simple list of integers.
+     * The default implementation stores the device name and then calls
+     * storeGPIOValues().
      *
-     * Sub-classes should override if needed to store device-specific data
-     * and/or a formatted representation of the GPIO values.
+     * Sub-classes should override if needed to store device-specific data.
      *
      * This method should NOT throw exceptions.  If debug data cannot be
      * obtained, the error should be caught and ignored so that pgood error
@@ -131,6 +130,24 @@
         std::map<std::string, std::string>& additionalData);
 
     /**
+     * Store GPIO values in the specified additional data map.
+     *
+     * The default implementation stores the values as a simple list of
+     * integers.
+     *
+     * Sub-classes should override if more advanced formatting is needed.  For
+     * example, GPIOs could be stored individually with a name and value, or
+     * related GPIOs could be formatted as a group.
+     *
+     * @param services System services like hardware presence and the journal
+     * @param values GPIO values obtained from the device (if any)
+     * @param additionalData Additional data to include in an error log
+     */
+    virtual void
+        storeGPIOValues(Services& services, const std::vector<int>& values,
+                        std::map<std::string, std::string>& additionalData);
+
+    /**
      * Device name.
      */
     std::string name{};