diff --git a/esphome/components/wifi/__init__.py b/esphome/components/wifi/__init__.py
index 33557f03c75..bc4e177219a 100644
--- a/esphome/components/wifi/__init__.py
+++ b/esphome/components/wifi/__init__.py
@@ -289,12 +289,12 @@ def final_validate(config):
 def _consume_wifi_sockets(config: ConfigType) -> ConfigType:
     """Register UDP PCBs used internally by lwIP for DHCP and DNS.
 
-    Only needed on LibreTiny where we directly set MEMP_NUM_UDP_PCB (the raw
-    PCB pool shared by both application sockets and lwIP internals like DHCP/DNS).
-    On ESP32, CONFIG_LWIP_MAX_SOCKETS only controls the POSIX socket layer —
-    DHCP/DNS use raw udp_new() which bypasses it entirely.
+    Needed on LibreTiny and RP2040 where we directly set MEMP_NUM_UDP_PCB (the
+    raw PCB pool shared by both application sockets and lwIP internals like
+    DHCP/DNS). On ESP32, CONFIG_LWIP_MAX_SOCKETS only controls the POSIX socket
+    layer — DHCP/DNS use raw udp_new() which bypasses it entirely.
     """
-    if not (CORE.is_bk72xx or CORE.is_rtl87xx or CORE.is_ln882x):
+    if not (CORE.is_bk72xx or CORE.is_rtl87xx or CORE.is_ln882x or CORE.is_rp2040):
         return config
     from esphome.components import socket
 
diff --git a/tests/components/core/test_value_accuracy.cpp b/tests/components/core/test_value_accuracy.cpp
index 6a63078f6f2..381a742a9cd 100644
--- a/tests/components/core/test_value_accuracy.cpp
+++ b/tests/components/core/test_value_accuracy.cpp
@@ -150,6 +150,21 @@ TEST(ValueAccuracyToBuf, ReturnsCorrectLength) {
   EXPECT_EQ(strlen(buf), len);
 }
 
+TEST(ValueAccuracyToBuf, NegativeZero) {
+  // Hand-rolled formatter must preserve snprintf's sign-of-zero behavior.
+  EXPECT_EQ(va_to_string(-0.0f, 2), va_reference(-0.0f, 2));
+  EXPECT_EQ(va_to_string(-0.0f, 0), va_reference(-0.0f, 0));
+  // Tiny negative that rounds to zero at this precision must still render as "-0.00".
+  EXPECT_EQ(va_to_string(-0.001f, 2), va_reference(-0.001f, 2));
+}
+
+TEST(ValueAccuracyToBuf, OverflowFallsBackToSnprintf) {
+  // |value| * 10^acc must exceed UINT32_MAX to exercise the snprintf fallback path.
+  EXPECT_EQ(va_to_string(1.0e7f, 3), va_reference(1.0e7f, 3));
+  EXPECT_EQ(va_to_string(-1.0e7f, 3), va_reference(-1.0e7f, 3));
+  EXPECT_EQ(va_to_string(5.0e9f, 0), va_reference(5.0e9f, 0));
+}
+
 // --- value_accuracy_with_uom_to_buf ---
 
 static std::string va_uom_to_string(float value, int8_t accuracy_decimals, const char *uom) {