diff --git a/ipmitool/include/ipmitool/ipmi.h b/ipmitool/include/ipmitool/ipmi.h
index ec43a6f..8d71d62 100644
--- a/ipmitool/include/ipmitool/ipmi.h
+++ b/ipmitool/include/ipmitool/ipmi.h
@@ -40,6 +40,7 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <netinet/in.h>
+#include <ipmitool/helper.h>
 
 #define BUF_SIZE 256
 
@@ -121,6 +122,6 @@ struct ipmi_intf {
 #define IPMI_BMC_SLAVE_ADDR		0x20
 #define IPMI_REMOTE_SWID		0x81
 
-int handle_ipmi(struct ipmi_intf *intf, unsigned char * data, int data_len);
+const struct valstr completion_code_vals[25];
 
 #endif /* IPMI_H */
diff --git a/ipmitool/lib/ipmi_bmc.c b/ipmitool/lib/ipmi_bmc.c
index 3db4ef7..cbeab1c 100644
--- a/ipmitool/lib/ipmi_bmc.c
+++ b/ipmitool/lib/ipmi_bmc.c
@@ -44,6 +44,34 @@
 
 extern int verbose;
 
+const struct valstr completion_code_vals[] = {
+	{ 0x00, "Command completed normally" },
+	{ 0xc0, "Node busy" },
+	{ 0xc1, "Invalid command" },
+	{ 0xc2, "Invalid command on LUN" },
+	{ 0xc3, "Timeout" },
+	{ 0xc4, "Out of space" },
+	{ 0xc5, "Reservation cancelled or invalid" },
+	{ 0xc6, "Request data truncated" },
+	{ 0xc7, "Request data length invalid" },
+	{ 0xc8, "Request data field length limit exceeded" },
+	{ 0xc9, "Parameter out of range" },
+	{ 0xca, "Cannot return number of requested data bytes" },
+	{ 0xcb, "Requested sensor, data, or record not found" },
+	{ 0xcc, "Invalid data field in request" },
+	{ 0xcd, "Command illegal for specified sensor or record type" },
+	{ 0xce, "Command response could not be provided" },
+	{ 0xcf, "Cannot execute duplicated request" },
+	{ 0xd0, "SDR Repository in update mode" },
+	{ 0xd1, "Device firmeware in update mode" },
+	{ 0xd2, "BMC initialization in progress" },
+	{ 0xd3, "Destination unavailable" },
+	{ 0xd4, "Insufficient priviledge level" },
+	{ 0xd5, "Command not supported in present state" },
+	{ 0xff, "Unspecified error" },
+	{ 0x00, NULL }
+};
+
 static int ipmi_bmc_reset(struct ipmi_intf * intf, int cmd)
 {
 	struct ipmi_rs * rsp;
diff --git a/ipmitool/lib/ipmi_sdr.c b/ipmitool/lib/ipmi_sdr.c
index e9416eb..2e24f7b 100644
--- a/ipmitool/lib/ipmi_sdr.c
+++ b/ipmitool/lib/ipmi_sdr.c
@@ -86,9 +86,6 @@ ipmi_sdr_get_sensor_reading(struct ipmi_intf * intf, unsigned char sensor)
 
 	rsp = intf->sendrecv(intf, &req);
 
-	if (!rsp || rsp->ccode)
-		return NULL;
-
 	return rsp;
 }
 
@@ -343,7 +340,7 @@ ipmi_sdr_print_sensors(struct ipmi_intf * intf, int do_unit)
 	struct sdr_get_rs * header;
 	struct sdr_record_full_sensor * sensor;
 
-	int next = 0, i = 0, total;
+	int next = 0, i = 0, total, validread;
 	unsigned short reservation;
 	float val;
 	char sval[16], unitstr[16];
@@ -386,6 +383,7 @@ ipmi_sdr_print_sensors(struct ipmi_intf * intf, int do_unit)
 		printf("SDR reserveration ID %04x\n", reservation);
 
 	while (next < total) {
+		validread = 1;
 		i = 0;
 
 		header = ipmi_sdr_get_header(intf, reservation, next);
@@ -421,14 +419,21 @@ ipmi_sdr_print_sensors(struct ipmi_intf * intf, int do_unit)
 
 		rsp = ipmi_sdr_get_sensor_reading(intf, sensor->keys.sensor_num);
 		if (!rsp || rsp->ccode) {
-			printf("error reading sensor\n");
-			continue;
+			if (rsp && rsp->ccode == 0xcb) {
+				/* sensor not found */
+				val = 0.0;
+				validread = 0;
+			} else {
+				printf("Error reading sensor: %s\n",
+				       val2str(rsp->ccode, completion_code_vals));
+				continue;
+			}
+		} else {
+			/* convert RAW reading into units */
+			val = rsp->data[0] ? sdr_convert_sensor_reading(sensor, rsp->data[0]) : 0;
 		}
 
-		/* convert RAW reading into units */
-		val = rsp->data[0] ? sdr_convert_sensor_reading(sensor, rsp->data[0]) : 0;
-
-		if (do_unit) {
+		if (do_unit && validread) {
 			memset(unitstr, 0, sizeof(unitstr));
 			/* determine units with possible modifiers */
 			switch (sensor->unit.modifier) {
@@ -462,11 +467,16 @@ ipmi_sdr_print_sensors(struct ipmi_intf * intf, int do_unit)
 				       sensor->id_code ? desc : NULL);
 
 			memset(sval, 0, sizeof(sval));
-			i += snprintf(sval, sizeof(sval), "%.*f",
-				     (val==(int)val) ? 0 : 3, val);
+			if (validread) {
+				i += snprintf(sval, sizeof(sval), "%.*f",
+					      (val==(int)val) ? 0 : 3, val);
+			} else {
+				i += snprintf(sval, sizeof(sval), "no reading");
+				i--;
+			}
 			printf("%s", sval);
 
-			if (do_unit)
+			if (do_unit && validread)
 				printf(" %s", unitstr);
 
 			if (csv_output)
@@ -487,8 +497,11 @@ ipmi_sdr_print_sensors(struct ipmi_intf * intf, int do_unit)
 			printf("Entity  | %d.%d (%s)\n",
 			       sensor->entity.id, sensor->entity.instance,
 			       val2str(sensor->entity.id, entity_id_vals));
-			printf("Reading | %.*f %s\n",
-			       (val==(int)val) ? 0 : 3, val, unitstr);
+			if (validread)
+				printf("Reading | %.*f %s\n",
+				       (val==(int)val) ? 0 : 3, val, unitstr);
+			else
+				printf("Reading | not present\n");
 			printf("Status  | %s\n",
 			       ipmi_sdr_get_status(rsp->data[2]));
 			printf("\n");