diff --git a/pmbus.hpp b/pmbus.hpp
index 23121b9..a2572f7 100644
--- a/pmbus.hpp
+++ b/pmbus.hpp
@@ -29,6 +29,13 @@
 // Manufacturing specific status bits
 constexpr auto STATUS_MFR = "status0_mfr";
 
+// Reports on the status of any fans installed in position 1 and 2.
+constexpr auto STATUS_FANS_1_2 = "status0_fans12";
+
+// Reports on temperature faults or warnings. Overtemperature fault,
+// overtemperature warning, undertemperature warning, undertemperature fault.
+constexpr auto STATUS_TEMPERATURE = "status0_temp";
+
 namespace status_word
 {
 constexpr auto VOUT_FAULT = 0x8000;
@@ -42,6 +49,10 @@
 // The bit mask representing the POWER_GOOD Negated bit of the STATUS_WORD.
 constexpr auto POWER_GOOD_NEGATED = 0x0800;
 
+// The bit mask representing the FAN FAULT or WARNING bit of the STATUS_WORD.
+// Bit 2 of the high byte of STATUS_WORD.
+constexpr auto FAN_FAULT = 0x0400;
+
 // The bit mask representing the UNITI_IS_OFF bit of the STATUS_WORD.
 constexpr auto UNIT_IS_OFF = 0x0040;