diff --git a/include/CPUSensor.hpp b/include/CPUSensor.hpp
index e667897..c4a47bc 100644
--- a/include/CPUSensor.hpp
+++ b/include/CPUSensor.hpp
@@ -45,7 +45,7 @@
     bool show;
     size_t pollTime;
     bool loggedInterfaceDown = false;
-    uint8_t minMaxReadCounter;
+    uint8_t minMaxReadCounter{0};
     int fd;
     void handleResponse(const boost::system::error_code& err);
     void checkThresholds(void) override;
diff --git a/include/ChassisIntrusionSensor.hpp b/include/ChassisIntrusionSensor.hpp
index 142ced3..3f2b7c8 100644
--- a/include/ChassisIntrusionSensor.hpp
+++ b/include/ChassisIntrusionSensor.hpp
@@ -30,19 +30,19 @@
     std::shared_ptr<sdbusplus::asio::dbus_interface> mIface;
     std::shared_ptr<sdbusplus::asio::connection> mDbusConn;
 
-    IntrusionSensorType mType;
+    IntrusionSensorType mType{IntrusionSensorType::gpio};
 
     // intrusion status. 0: not intruded, 1: intruded
     std::string mValue = "unknown";
     std::string mOldValue = "unknown";
 
     // valid if it is PCH register via i2c
-    int mBusId;
-    int mSlaveAddr;
+    int mBusId{-1};
+    int mSlaveAddr{-1};
     boost::asio::deadline_timer mPollTimer;
 
     // valid if it is via GPIO
-    bool mGpioInverted;
+    bool mGpioInverted{false};
     std::string mPinName = "CHASSIS_INTRUSION";
     gpiod::line mGpioLine;
     boost::asio::posix::stream_descriptor mGpioFd;
diff --git a/include/ExternalSensor.hpp b/include/ExternalSensor.hpp
index 3ca3c8a..30147fd 100644
--- a/include/ExternalSensor.hpp
+++ b/include/ExternalSensor.hpp
@@ -56,7 +56,7 @@
 
     std::chrono::steady_clock::time_point writeLast;
     std::chrono::steady_clock::duration writeTimeout;
-    bool writeAlive;
+    bool writeAlive{false};
     bool writePerishable;
     std::function<void(const std::chrono::steady_clock::time_point& now)>
         writeHook;
diff --git a/include/NVMeSensor.hpp b/include/NVMeSensor.hpp
index a0dce78..5c70855 100644
--- a/include/NVMeSensor.hpp
+++ b/include/NVMeSensor.hpp
@@ -26,7 +26,7 @@
   private:
     const unsigned int scanDelayTicks = 5 * 60;
     sdbusplus::asio::object_server& objServer;
-    unsigned int scanDelay;
+    unsigned int scanDelay{0};
 
     void checkThresholds(void) override;
 };
diff --git a/include/PSUEvent.hpp b/include/PSUEvent.hpp
index 3a39164..e7b5c0b 100644
--- a/include/PSUEvent.hpp
+++ b/include/PSUEvent.hpp
@@ -51,7 +51,7 @@
   private:
     int value = 0;
     int fd;
-    size_t errCount;
+    size_t errCount{0};
     std::string path;
     std::string eventName;
 
diff --git a/include/sensor.hpp b/include/sensor.hpp
index 236c6e7..078fc45 100644
--- a/include/sensor.hpp
+++ b/include/sensor.hpp
@@ -68,7 +68,7 @@
         minValue(min), thresholds(std::move(thresholdData)),
         hysteresisTrigger((max - min) * 0.01),
         hysteresisPublish((max - min) * 0.0001), dbusConnection(conn),
-        readState(readState), errCount(0),
+        readState(readState),
         instrumentation(enableInstrumentation
                             ? std::make_unique<SensorInstrumentation>()
                             : nullptr)
@@ -102,7 +102,7 @@
     double hysteresisPublish;
     std::shared_ptr<sdbusplus::asio::connection> dbusConnection;
     PowerState readState;
-    size_t errCount;
+    size_t errCount{0};
     std::unique_ptr<SensorInstrumentation> instrumentation;
 
     // This member variable provides a hook that can be used to receive
diff --git a/src/CPUSensor.cpp b/src/CPUSensor.cpp
index 06d0a69..87fa53f 100644
--- a/src/CPUSensor.cpp
+++ b/src/CPUSensor.cpp
@@ -46,8 +46,8 @@
     inputDev(io), waitTimer(io),
     nameTcontrol("Tcontrol CPU" + std::to_string(cpuId)), path(path),
     privTcontrol(std::numeric_limits<double>::quiet_NaN()),
-    dtsOffset(dtsOffset), show(show), pollTime(CPUSensor::sensorPollMs),
-    minMaxReadCounter(0)
+    dtsOffset(dtsOffset), show(show), pollTime(CPUSensor::sensorPollMs)
+
 {
     if (show)
     {
diff --git a/src/ChassisIntrusionSensor.cpp b/src/ChassisIntrusionSensor.cpp
index d480055..7b2a0a3 100644
--- a/src/ChassisIntrusionSensor.cpp
+++ b/src/ChassisIntrusionSensor.cpp
@@ -363,9 +363,7 @@
     boost::asio::io_service& io,
     std::shared_ptr<sdbusplus::asio::dbus_interface> iface) :
     mIface(std::move(iface)),
-    mType(IntrusionSensorType::gpio), mValue("unknown"), mOldValue("unknown"),
-    mBusId(-1), mSlaveAddr(-1), mPollTimer(io), mGpioInverted(false),
-    mGpioFd(io)
+    mValue("unknown"), mOldValue("unknown"), mPollTimer(io), mGpioFd(io)
 {}
 
 ChassisIntrusionSensor::~ChassisIntrusionSensor()
diff --git a/src/ExternalSensor.cpp b/src/ExternalSensor.cpp
index 5fba9b4..cc341f8 100644
--- a/src/ExternalSensor.cpp
+++ b/src/ExternalSensor.cpp
@@ -33,7 +33,7 @@
     writeTimeout(
         std::chrono::duration_cast<std::chrono::steady_clock::duration>(
             std::chrono::duration<double>(timeoutSecs))),
-    writeAlive(false), writePerishable(timeoutSecs > 0.0)
+    writePerishable(timeoutSecs > 0.0)
 {
     // The caller must specify what physical characteristic
     // an external sensor is expected to be measuring, such as temperature,
diff --git a/src/NVMeSensor.cpp b/src/NVMeSensor.cpp
index 213e320..fc7bc48 100644
--- a/src/NVMeSensor.cpp
+++ b/src/NVMeSensor.cpp
@@ -31,7 +31,7 @@
     Sensor(escapeName(sensorName), std::move(thresholdsIn), sensorConfiguration,
            NVMeSensor::configType, false, false, maxReading, minReading, conn,
            PowerState::on),
-    bus(busNumber), objServer(objectServer), scanDelay(0)
+    bus(busNumber), objServer(objectServer)
 {
     if (bus < 0)
     {
diff --git a/src/PSUEvent.cpp b/src/PSUEvent.cpp
index c2ed486..23f26cc 100644
--- a/src/PSUEvent.cpp
+++ b/src/PSUEvent.cpp
@@ -149,9 +149,9 @@
     std::enable_shared_from_this<PSUSubEvent>(),
     eventInterface(std::move(eventInterface)), asserts(std::move(asserts)),
     combineEvent(std::move(combineEvent)), assertState(std::move(state)),
-    errCount(0), path(path), eventName(eventName), readState(powerState),
-    waitTimer(io), inputDev(io), psuName(psuName),
-    groupEventName(groupEventName), systemBus(conn)
+    path(path), eventName(eventName), readState(powerState), waitTimer(io),
+    inputDev(io), psuName(psuName), groupEventName(groupEventName),
+    systemBus(conn)
 {
     if (pollRate > 0.0)
     {
diff --git a/tests/test_Utils.cpp b/tests/test_Utils.cpp
index a66b70c..7b6b947 100644
--- a/tests/test_Utils.cpp
+++ b/tests/test_Utils.cpp
@@ -27,10 +27,12 @@
         fs::create_directory(hwmonDir);
         auto hwmon10 = hwmonDir / "hwmon10";
         fs::create_directory(hwmonDir / "hwmon10");
-        std::ofstream{hwmon10 / "temp1_input"};
-        std::ofstream{hwmon10 / "temp1_min"};
-        std::ofstream{hwmon10 / "temp1_max"};
-        std::ofstream{hwmon10 / "temp2_input"};
+        {
+            std::ofstream temp1Input{hwmon10 / "temp1_input"};
+            std::ofstream temp1Min{hwmon10 / "temp1_min"};
+            std::ofstream temp1Max{hwmon10 / "temp1_max"};
+            std::ofstream temp2Input{hwmon10 / "temp2_input"};
+        }
         createPECIDir();
     }
 
@@ -50,10 +52,12 @@
         auto peci0 =
             peciDir / "peci-0/device/0-30/peci-cputemp.0/hwmon/hwmon25";
         fs::create_directories(peci0);
-        std::ofstream{peci0 / "temp0_input"};
-        std::ofstream{peci0 / "temp1_input"};
-        std::ofstream{peci0 / "temp2_input"};
-        std::ofstream{peci0 / "name"};
+        {
+            std::ofstream temp0Input{peci0 / "temp0_input"};
+            std::ofstream temp1Input{peci0 / "temp1_input"};
+            std::ofstream temp2Input{peci0 / "temp2_input"};
+            std::ofstream name{peci0 / "name"};
+        }
         auto devDir = peciDir / "peci-0/peci_dev/peci-0";
         fs::create_directories(devDir);
         fs::create_directory_symlink("../../../peci-0", devDir / "device");