2. General Negative Responses

This is a comprehensive list of all negative response codes as defined by the ISO-14229 specification. A value of “Yes” in the columns below indicates that the NRC is applicable to ALL services of the corresponding type regardless of whether or not it is expressly listed in the “Unique Negative Responses” section of a specific service.

NRC	Description	0x22	0x2E	0x2F	0x31
0x11	General service not supported	Yes	Yes	Yes	Yes
0x12	Sub-function nut supported	No	No	Yes	Yes
0x13	Invalid length	Yes	Yes	Yes	Yes
0x22	Conditions not correct	No	No	No	No
0x24	Request sequence error	No	No	No	No
0x31	Request out of range	No	No	No	No
0x33	Security access denied	No	No	No	No
0x35	Invalid Key	No	No	No	No
0x36	Exceeded number of attempts	No	No	No	No
0x37	Time delay not expired	No	No	No	No
0x78	Request received, response pending	No	No	No	No
0x7E	Sub-function not supported in current session	No	No	No	No
0x7F	Service not supported in current session	Yes	Yes	Yes	Yes
0x81	Engine RPM too high	No	No	No	No
0x82	Engine RPM too low	No	No	No	No
0x83	Engine running	No	No	No	No
0x84	Engine not running	No	No	No	No
0x85	Engine run time too low	No	No	No	No
0x86	Temperature too high	No	No	No	No
0x87	Temperature too low	No	No	No	No
0x88	Vehicle speed too high	No	No	No	No
0x89	Vehicle speed too low	No	No	No	No
0x8A	Throttle too high	No	No	No	No
0x8B	Throttle too low	No	No	No	No
0x8C	Transmission not in neutral	No	No	No	No
0x8D	Transmission not in gear	No	No	No	No
0x8F	Brake not applied	No	No	No	No
0x90	Transmission not in park	No	No	No	No
0x92	Voltage too high	No	No	No	No
0x93	Voltage too low	No	No	No	No

Last modified October 12, 2025: Initial commit (1fadfc4)