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8.6.4 Supported Negative Response Codes (RC_). 
The following negative response codes (Table 84) shall
be implemented for this service.
Table 84: Supported Negative Response Codes
Hex Description
Cvt Mnemonic
12 
SubFunctionNotSupported-InvalidFormat
This response code shall be sent if the length of the request message is invalid.
1. The message_data_length is less than 3 (need at least one PID requested +
SID).
2. The number of data bytes in the request exceeds 2 times the maximum number of
PIDs allowed with a single request + 1.
3. The number of bytes in the request message after the SID is not an even number.
M SFNS_IF
22 
ConditionsNotCorrectOrRequestSequenceError
This response code shall be sent if the operating conditions of the ECU are such that
it cannot perform the required action (e.g., the data for a PID is stored in a satellite
device and the link from the host to the satellite device has failed). This response
code is not intended to be used if the ECU conditions are such that the request
temporarily cannot be performed (e.g., the data must be retrieved from another
processor internal to the ECU via a System Packet Interface (SPI) bus and will not be
available within the required P2
c 
time). Response code $78 is used when conditions
are temporarily not met. If a node supports response code $22, the reason(s) to
generate this response code must be documented in the CTS, SSTS, or
supplemental diagnostic specification referenced by either of the two preceding
documents, and must not conflict with any of the other negative response codes
defined for this service.
C CNCRSE
31 
RequestOutOfRange
A negative response with this response code shall be sent only if the request for this
service was sent using the ECU Physical Request CAN Identifier (see paragraph
4.4.1 for description of Physical Request CAN Identifier) and:
1. None of the PID(s) being requested is supported in the ECU.
2. All supported PID(s) being requested require security access and ECU security
access has not been granted.
If a request for this service is sent using the All Node Functional Request CANId
(including a valid extended address) and either of the above conditions exist then
there shall be no response sent. Reference the pseudo code in paragraph 8.6.6.2 for
further clarification.
M
ROOR