diff --git a/klippy/extras/bus.py b/klippy/extras/bus.py
index 19e278418..bc5f4e559 100644
--- a/klippy/extras/bus.py
+++ b/klippy/extras/bus.py
@@ -111,10 +111,10 @@ class MCU_SPI:
         return self.spi_transfer_cmd.send([self.oid, data],
                                           minclock=minclock, reqclock=reqclock)
     def spi_transfer_with_preface(self, preface_data, data,
-                                  minclock=0, reqclock=0):
+                                  minclock=0, reqclock=0, retry=True):
         return self.spi_transfer_cmd.send_with_preface(
             self.spi_send_cmd, [self.oid, preface_data], [self.oid, data],
-            minclock=minclock, reqclock=reqclock)
+            minclock=minclock, reqclock=reqclock, retry=retry)
 
 # Helper to setup an spi bus from settings in a config section
 def MCU_SPI_from_config(config, mode, pin_option="cs_pin",
diff --git a/klippy/extras/sht3x.py b/klippy/extras/sht3x.py
index c4fb22960..8151bd462 100644
--- a/klippy/extras/sht3x.py
+++ b/klippy/extras/sht3x.py
@@ -56,7 +56,7 @@ class SHT3X:
         self.reactor = self.printer.get_reactor()
         self.i2c = bus.MCU_I2C_from_config(
             config, default_addr=SHT3X_I2C_ADDR, default_speed=100000)
-        self._error = self.i2c.get_mcu().error
+        self._error = self.printer.command_error
         self.report_time = config.getint('sht3x_report_time', 1, minval=1)
         self.deviceId = config.get('sensor_type')
         self.temp = self.min_temp = self.max_temp = self.humidity = 0.
diff --git a/klippy/extras/tmc2130.py b/klippy/extras/tmc2130.py
index 181fe07ae..953eb486d 100644
--- a/klippy/extras/tmc2130.py
+++ b/klippy/extras/tmc2130.py
@@ -192,20 +192,25 @@ class MCU_TMC_SPI_chain:
             share = "tmc_spi_cs"
         self.spi = bus.MCU_SPI_from_config(config, 3, default_speed=4000000,
                                            share_type=share)
+        self._error = self.printer.command_error
         self.taken_chain_positions = []
     def _build_cmd(self, data, chain_pos):
         return ([0x00] * ((self.chain_len - chain_pos) * 5) +
                 data + [0x00] * ((chain_pos - 1) * 5))
     def reg_read(self, reg, chain_pos):
         cmd = self._build_cmd([reg, 0x00, 0x00, 0x00, 0x00], chain_pos)
-        self.spi.spi_send(cmd)
         if self.printer.get_start_args().get('debugoutput') is not None:
+            self.spi.spi_send(cmd)
             return {
                 "spi_status": 0,
                 "data": 0,
                 "#receive_time": .0,
             }
-        params = self.spi.spi_transfer(cmd)
+        # Optimize read by grouping write + transfer request
+        try:
+            params = self.spi.spi_transfer_with_preface(cmd, cmd, retry=False)
+        except self._error:
+            params = self.spi.spi_transfer(cmd)
         pr = bytearray(params['response'])
         pr = pr[(self.chain_len - chain_pos) * 5 :
                 (self.chain_len - chain_pos + 1) * 5]