diff --git a/sonoff/_releasenotes.ino b/sonoff/_releasenotes.ino
index 5acca6a36..e32a7c7ef 100644
--- a/sonoff/_releasenotes.ino
+++ b/sonoff/_releasenotes.ino
@@ -2,6 +2,7 @@
  * Add CRC to Settings making future upgrades more fail-safe
  * Remove version 3, 4 and pre 5.2 settings auto-upgrade. See https://github.com/arendst/Sonoff-Tasmota/wiki/Upgrade#migration-path
  * Change default CFG_HOLDER from 0x20161209 to 4617 (=0x1209) - no impact on default upgrades
+ * Fix Pzem004T checksum error
  *
  * 5.14.0b
  * Add Console Commands to send KNX Commands
diff --git a/sonoff/xdrv_02_webserver.ino b/sonoff/xdrv_02_webserver.ino
index 0ecea9f79..c290bcd90 100644
--- a/sonoff/xdrv_02_webserver.ino
+++ b/sonoff/xdrv_02_webserver.ino
@@ -942,15 +942,6 @@ void HandleBackupConfiguration()
 
   WebServer->send(200, FPSTR(HDR_CTYPE_STREAM), "");
   memcpy(settings_buffer, &Settings, sizeof(Settings));
-/*
-  settings_buffer[0] = CONFIG_FILE_SIGN;
-  settings_buffer[1] = (!config_xor_on_set) ? 0 : 1;
-  if (settings_buffer[1]) {
-    for (uint16_t i = 2; i < sizeof(Settings); i++) {
-      settings_buffer[i] ^= (config_xor_on_set +i);
-    }
-  }
-*/
   if (config_xor_on_set) {
     for (uint16_t i = 2; i < sizeof(Settings); i++) {
       settings_buffer[i] ^= (config_xor_on_set +i);
diff --git a/sonoff/xdrv_03_energy.ino b/sonoff/xdrv_03_energy.ino
index 10b8f1c95..e38dc537b 100644
--- a/sonoff/xdrv_03_energy.ino
+++ b/sonoff/xdrv_03_energy.ino
@@ -281,6 +281,9 @@ long cf_pulses_last_time = CSE_PULSES_NOT_INITIALIZED;
 
 void CseReceived()
 {
+  //  0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
+  // 55 5A 02 F7 60 00 03 AB 00 40 10 02 60 5D 51 A6 58 03 E9 EF 71 0B 7A 36
+  // Hd Id VCal---- Voltage- ICal---- Current- PCal---- Power--- Ad CF--- Ck
   AddLogSerial(LOG_LEVEL_DEBUG_MORE);
 
   uint8_t header = serial_in_buffer[0];
@@ -481,7 +484,17 @@ bool PzemReceiveReady()
 
 bool PzemRecieve(uint8_t resp, float *data)
 {
-  uint8_t buffer[sizeof(PZEMCommand)];
+  //  0  1  2  3  4  5  6
+  // A4 00 00 00 00 00 A4 - Set address
+  // A0 00 D4 07 00 00 7B - Voltage (212.7V)
+  // A1 00 00 0A 00 00 AB - Current (0.1A)
+  // A1 00 00 00 00 00 A1 - No current
+  // A2 00 16 00 00 00 B8 - Power (22W)
+  // A2 00 00 00 00 00 A2 - No power
+  // A3 00 08 A4 00 00 4F - Energy (2.212kWh)
+  // A3 01 86 9F 00 00 C9 - Energy (99.999kWh)
+
+  uint8_t buffer[sizeof(PZEMCommand)] = { 0 };
 
   unsigned long start = millis();
   uint8_t len = 0;
@@ -491,6 +504,10 @@ bool PzemRecieve(uint8_t resp, float *data)
       if (!c && !len) {
         continue;  // skip 0 at startup
       }
+      if ((1 == len) && (buffer[0] == c)) {
+        len--;
+        continue;  // fix skewed data
+      }
       buffer[len++] = c;
     }
   }