IBM POST Codes

POST (Power on Self Test error codes for the early IBM computers.

IBM XT, PC, AT, & PS/2 Computers

 

0xx 1xx 2xx 3xx 4xx 5xx
6xx 7xx 9xx 10xx 11xx 12xx
13xx 14xx 15xx 16xx 17xx 18xx
19xx 20xx 21xx 22xx 24xx 26xx
27xx 29xx 30xx 31xx 33xx 74xx
85xx 86xx 100xx 101xx 104xx 165xx

 

Code Description
0xx Generic POST Error Codes
01x Undetermined Problem Errors
02x Power Supply Errors
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1xx System Board Errors
101 Interrupt Failure
102 Timer Failure
103 Timer interrupt failure
104 Protected mode failure
105 Last 8042 command not accepted (Keyboard Controller)
106 Converting logic test
107 Hot NMI test
108 Timer bus test
109 Direct memory access test error
110 System board memory
111 Adapter memory
112 Any adapter in system unit
113 any adapter in system unit
121 Unexpected hardware interrupts occurred
131 Cassette wrap test failed
151 System Board Error; Defective battery
152 Real time clock failure
161 (Run SETUP) Battery failure
162 System options not set correctly
163 Time and date not set
164 Memory size error
165 System options not set
166 any adapter in system unit
199 User-indicated configuration not correct
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2xx Memory (RAM) Errors xxyyyy yyzz 201 bad ram chip in bank xx row zz
201 Memory test failed
202 Memory address error
203 Memory address error
215 system board memory failure
216 system board memory failure
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3xx Keyboard Errors
301 Keyboard did not respond to software reset correctly, or a stuck key failure was detected. If a stuck key was detected, the scan code for the key is displayed in hexadecimal. For example, the error code 49 301 indicates that Key 73, the PAGE UP key, has failed (49 hex = 73 decimal)
302 User-indicated error from the keyboard test, or AT keylock is locked
303 Keyboard or system unit error
304 Keyboard or system unit error; CMOS does not match system
305 Models 50 and 60 fuse or keyboard cable error
341 Replace keyboard
342 Replace interface cable
343 Replace enhancement card or cable
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4xx Monochrome Monitor Errors
401 Monochrome memory test, horizontal synchronous frequency test, or video test failed
408 User-indicated display attributes failure
416 User-indicated character set failure
424 User-indicated 80 X 25 mode failure
432 Parallel port test failed (monochrome adapter)
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5xx Color Monitor Errors
501 Color memory test failed, horizontal synchronous frequency test, or video test failed
508 User-indicated display attribute failure
516 User-indicated character set failure
524 User-indicated 80 X 25 mode failure
532 User-indicated 40 X 25 mode failure
540 User-indicated 320 X 200 graphics mode failure
548 User-indicated 640 X 200 graphics mode failure
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6xx Floppy Disk Drive Errors
601 Disk power-on diagnostics test failed
602 Disk test failed; boot record is not valid
603 Disk size error
606 Disk verify function failed
607 Write-protected disk
608 Bad command disk status returned
610 Disk initialization failed
611 Timeout – disk status returned
612 Bad NEC (controller) – disk status returned
613 Bad DMA – disk status returned
614 DMA Boundary error
621 Bad seek – disk status returned
622 Bad CRC – disk status returned
623 Record not found – disk status returned
624 Bad address mark – disk status returned
625 Bad NEC (controller) seek – disk status returned
626 Disk data compare error
627 Disk change line error
628 Disk removed
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7xx 8087 or 80287 Math Coprocessor Errors
701 Math coprocessor test failed
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9xx Parallel Printer Adapter Errors
901 Parallel printer adapter test failed
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10xx Reserved for Parallel Printer Adapter
1001 Alt printer Adapter test failed
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11xx Asynchronous Communications Adapter Errors
1101 Asynchronous communications adapter test failed
1102 Any serial device (system board)
1106 Any serial device (system board)
1107 Communications cable (system board)
1108 Any serial device (system board)
1109 Any serial device (system board)
1110 Modem status register not clear
1111 Ring indicate failure
1112 Trailing edge ring indicate failure
1113 Receive and delta receive line signal detect failure
1114 Receive line signal detect failure
1115 Delta receive line signal detect failure
1116 Line control register; all bits cannot be set
1117 Line control register; all bits cannot be reset
1118 Xmit holding and/or shift register is stuck on
1119 Data ready stuck on
1120 Interrupt enable register, all bits cannot be set
1121 Interrupt enable register, all bits cannot be reset
1122 Interrupt pending stuck on
1123 Interrupt ID register stuck on
1124 Modem control register, all bits cannot be set
1125 Modem control register, all bits cannot be reset
1126 Modem status register, all bits cannot be set
1127 Modem status register, all bits cannot be reset
1128 Interrupt ID failure
1129 Cannot force overrun error
1130 No modem status interrupt
1131 Invalid interrupt pending
1132 No data ready
1133 No data available interrupt
1134 No transmit holding interrupt
1135 No interrupts
1136 No received line status interrupt
1137 No receive data available
1138 Transmit holding register not empty
1139 No modem status interrupt
1140 Transmit holding register not empty
1141 No interrupts
1142 No IRQ4 interrupt
1143 No IRQ3 interrupt
1144 No data transferred
1145 Maximum BAUD rate failed
1146 Minimum BAUD rate failed
1148 Timeout error
1149 Invalid data returned
1150 Modem status register error
1151 No DSR and Delta DSR
1152 No data set ready
1153 No delta
1154 Modem status register not clear
1155 No CTS and Delta CTS
1156 No clear to send
1157 No delta CTS
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12xx Alternate Asynchronous Communications Adapter Errors
1201 Alternate asynchronous communications adapter test failed
1202 Dual Asynchronous Adapter/A (Any serial device)
1206 Dual Asynchronous Adapter/A Any serial device
1207 Dual Asynchronous Adapter/A board error
1208 Dual Asynchronous Adapter/A Any serial device
1209 Dual Asynchronous Adapter/A Any serial device
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13xx Game Control Adapter Errors
1301 Game control adapter test failed
1302 Joystick test failed
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14xx Printer Errors
1401 Printer test failed
1404 Matrix printer failed
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15xx Synchronous Data Link Control (SDLC) Communications Adapter Errors
1510 8255 Port B failure
1511 8255 Port A failure
1512 8255 Port C failure
1513 8253 Timer 1 did not reach terminal count
1514 8253 Timer 1 stuck on
1515 8253 Timer 0 did not reach terminal count
1516 8253 Timer 0 stuck on
1517 8253 Timer 2 did not reach terminal count
1518 8253 Timer 2 stuck on
1519 8273 Port B error
1520 8273 Port A error
1521 8273 command/read timeout
1522 Interrupt level 4 failure
1523 Ring Indicate stuck on
1524 Receive clock stuck on
1525 Transmit clock stuck on
1526 Test indicate stuck on
1527 Ring indicate not on
1528 Receive clock not on
1529 Transmit clock not on
1530 Test indicate not on
1531 Data set ready not on
1532 Carrier detect not on
1533 Clear to send not on
1534 Data set ready stuck on
1536 Clear to send stuck on
1537 Level 3 interrupt failure
1538 Receive interrupt results error
1539 Wrap data miscompare
1540 DMA channel 1 error
1541 DMA channel 1 error
1542 Error in 8273 error checking or status reporting
1547 Stray interrupt level 4
1548 Stray interrupt level 3
1549 Interrupt presentation sequence timeout
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16xx Display Emulation Errors (327x, 5520, 525x)
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17xx Fixed Disk Errors
The following is a listing of Personal Computer AT Error Codes for the fixed disk drive and fixed disk drive adapter:
1700 Fixed Disk/Adapter
1701 HDD Controller Failure
1702 Time out error
1703 Seek error
1704 Disk adapter error
1705 No record found
1706 Write fault error
1707 Track 0 error
1708 Head select error
1709 Defective ECC
1710 Read buffer overrun
1711 Bad address mark
1712 Error-cause not determined
1713 Data compare error
1714 Drive not ready
1780 Disk 0 failure
1781 Disk 1 failure
1782 Disk adapter error
1790 Disk 0 error
1791 Disk 1 error
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18xx I/O Expansion Unit Errors
1801 I/O expansion unit POST error
1810 Enable/Disable failure
1811 Extender card warp test failed (disabled)
1812 High order address lines failure (disabled)
1813 Wait state failure (disabled)
1814 Enable/Disable could not be set on
1815 Wait state failure (disabled)
1816 Extender card warp test failed (enabled)
1817 High order address lines failure (enabled)
1818 Disable not functioning
1819 Wait request switch not set correctly
1820 Receiver card wrap test failure
1821 Receiver high order address lines failure
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19xx 3270 PC Attachment Card Errors
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20xx Binary Synchronous Communications (BSC) Adapter Errors
2010 8255 Port A failure
2011 8255 Port B failure
2012 8255 Port C failure
2013 8253 Timer 1 did not reach terminal count
2014 8253 Timer 1 stuck on
2016 8253 Timer 2 did not reach terminal count, or timer 2 stuck on
2017 8251 Data set ready failed to come on
2018 8251 Clear to send not sensed
2019 8251 Data set ready stuck on
2020 8251 Clear to send stuck on
2021 8251 Hardware reset failed
2022 8251 Software reset failed
2023 8251 Software “error reset” failed
2024 8251 Transmit ready did not come on
2025 8251 Receive ready did not come on
2026 8251 Could not force “overrun” error status
2027 Interrupt failure – no timer interrupt
2028 Interrupt failure – transmit, replace card or planar
2029 Interrupt failure – transmit, replace card
2030 Interrupt failure – receive, replace card or planar
2031 Interrupt failure – receive, replace card
2033 Ring indicate stuck on
2034 Receive clock stuck on
2035 Transmit clock stuck on
2036 Test indicate stuck on
2037 Ring indicate stuck on
2038 Receive clock not on
2039 Transmit clock not on
2040 Test indicate not on
2041 Data set ready not on
2042 Carrier detect not on
2043 Clear to send not on
2044 Data set ready stuck on
2045 Carrier detect stuck on
2046 Clear to send stuck on
2047 Unexpected transmit interrupt
2048 Unexpected receive interrupt
2049 Transmit data did not equal receive data
2050 8251 detected overrun error
2051 Lost data set ready during data wrap
2052 Receive timeout during data wrap
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21xx Alternate Binary Synchronous Communications Adapter Errors
2110 8255 Port A failure
2111 8255 Port B failure
2112 8255 Port C failure
2113 8253 Timer 1 did not reach terminal count
2114 8253 Timer 1 stuck on
2115 8253 Timer 2 did not reach terminal count, or timer 2 stuck on
2116 8251 Data set ready failed to come on
2117 8251 Clear to send not sensed
2118 8251 Data set ready stuck on
2119 8251 Clear to send stuck on
2120 8251 Hardware reset failed
2121 8251 Software reset failed
2122 8251 Software “error reset” failed
2123 8251 Transmit ready did not come on
2124 8251 Receive ready did not come on
2125 8251 Could not force “overrun” error status
2126 Interrupt failure – no timer interrupt
2128 Interrupt failure – transmit, replace card or planar
2129 Interrupt failure – transmit, replace card
2130 Interrupt failure – receive, replace card or planar
2131 Interrupt failure – receive, replace card
2133 Ring indicate stuck on
2134 Receive clock stuck on
2135 Transmit clock stuck on
2136 Test indicate stuck on
2137 Ring indicate stuck on
2138 Receive clock not on
2139 Transmit clock not on
2140 Test indicate not on
2141 Data set ready not on
2142 Carrier detect not on
2143 Clear to send not on
2144 Data set ready stuck on
2145 Carrier detect stuck on
2146 Clear to send stuck on
2147 Unexpected transmit interrupt
2148 Unexpected receive interrupt
2149 Transmit data did not equal receive data
2150 8251 detected overrun error
2151 Lost data set ready during data wrap
2152 Receive timeout during data wrap
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22xx Cluster Adapter Errors
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24xx Enhanced Graphics Adapter Errors
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26xx XT/370 Error Codes
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27xx XT/370 Error Codes
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29xx Color Matrix Printer Errors
2901
2902
2904
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30xx Primary PC Network Adapter Errors
3001 CPU Failure
3002 ROM Failure
3003 ID Failure
3004 RAM Failure
3005 HIC Failure
3006 +/- 12v Failed
3007 Digital Loopback Failure
3008 Host Detected HIC Failure
3009 Synchronous Fail & No Go Bit
3010 HIC Test OK & No Go Bit
3011 Go Bit & No CMD 41
3012 Card not present
3013 Digital Failure ( Fall Through )
3015 Analog Failure
3041 Hot Carrier (not this card)
3042 Hot Carrier (This Card)
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31xx Secondary PC Network Adapter Errors
3101 CPU Failure
3102 ROM Failure
3103 ID Failure
3104 RAM Failure
3105 HIC Failure
3106 +/- 12v Failed
3107 Digital Loopback Failure
3108 Host Detected HIC Failure
3109 Synchronous Fail & No Go Bit
3110 HIC Test OK & No Go Bit
3111 Go Bit & No CMD 41
3112 Card not present
3113 Digital Failure ( Fall Through )
3115 Analog Failure
3141 Hot Carrier (not this card)
3142 Hot Carrier (THIS CARD !!)
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33xx Compact Printer Errors
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74xx Display Adapter 8514/A
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85xx Expanded Memory Adapter
850x 80286 Expanded Memory Adapter/A
851x 80286 Expanded Memory Adapter/A
852x Memory Module Package on the 80286 Expanded Memory Adapter/A
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860x PS/2 Pointing Device Errors
8601 Pointing device (IBM mouse)
8602 Pointing device
8603 System board error
8604 System board : Pointing device
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100xx Multiprotocol Adapter/A
10002 Multiprotocol Adapter/A any serial device
10006 Multiprotocol Adapter/A any serial device
10007 Communications cable Multiprotocol Adapter/A
10008 Multiprotocol Adapter/A any serial device
10009 Multiprotocol Adapter/A any serial device
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101xx Modem Adapter/A
10102 Modem Adapter/A any serial device
10106 Modem Adapter/A any serial device
10108 Modem Adapter/A any serial device
10109 Modem Adapter/A any serial device
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104xx Fixed Disk Adapter (ESDI) Drives 0 or 1 (C or D)
10480 Fixed disk C, adapter (ESDI) or system board error
10481 Fixed disk D, adapter (ESDI) or system board error
10482 Fixed disk C or system board error
10483 Fixed disk adapter (ESDI) or system board error
10490 Fixed disk C or adapter (ESDI) error
10491 Fixed disk C or adapter (ESDI) error
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165xx Tape Errors
16500 6157 Tape Attachment Adapter
16520 6157 Streaming Tape Drive
16540 6157 Streaming Tape Drive or tape attachment adapter
Posted by Ed Hall on October 18th, 2013
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