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DTC Table [Immobilizer System (Advanced Keyless System)]

WARNING: This page is about a different car, the 2007 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.
DTC TABLE [IMMOBILIZER SYSTEM (ADVANCED KEYLESS SYSTEM)]

DTC Detection condition
Security light flashing pattern Keyless warning light M-MDS display(1)
Keyless control module Instrument cluster PCM
11
G04323317Courtesy of MAZDA MOTORS CORP.
 Off - DTC B1681 DTC P1260 No communication detected between keyless control module and PCM
On B1681 DTC B1681 DTC P1260 No communication detected between coil antenna and instrument cluster
12
G04323318Courtesy of MAZDA MOTORS CORP.
 On B2103 DTC B2103 DTC P1260 Coil antenna malfunction
13
G04323319Courtesy of MAZDA MOTORS CORP.
 Off - DTC B1600 P1260 Key ID number cannot be read
Off - DTC B2431 DTC P1260 Key ID number registration error
14
G04323320Courtesy of MAZDA MOTORS CORP.
 Off - DTC B1602 DTC P1260 Key ID number cannot be read
15
G04323321Courtesy of MAZDA MOTORS CORP.
 Off - DTC B1601 DTC P1260 Unprogrammed key ID number detected
On B1342 DTC B1601 DTC P1260 Keyless control module malfunction
16
G04323322Courtesy of MAZDA MOTORS CORP.
 Off - DTC U2510 DTC P1260 Communication error between instrument cluster and PCM (no response)
21
G04323323Courtesy of MAZDA MOTORS CORP.
 On B1213 DTC B1213 DTC P1260 Only one key ID number is programmed to the instrument cluster
22
G04323324Courtesy of MAZDA MOTORS CORP.
 On - DTC B2141 DTC P1260 Communication error between instrument cluster and PCM (data transfer error)
23
G04323325Courtesy of MAZDA MOTORS CORP.
 On - DTC B2139 DTC P1260 ID number data i the PCM and instrument cluster do not match
Not illuminated On B1213 - DTC P1260 Only one key ID number is programmed to the keyless control module
On U0073 MULTIPLEX COMMUNICATION SYSTEM[MULTIPLEX COMMUNICATION SYSTEM] MULTIPLEX COMMUNICATION SYSTEM[MULTIPLEX COMMUNICATION SYSTEM] CAN malfunction
Off U0323 U0100 U2023 MULTIPLEX COMMUNICATION SYSTEM[MULTIPLEX COMMUNICATION SYSTEM] MULTIPLEX COMMUNICATION SYSTEM[MULTIPLEX COMMUNICATION SYSTEM] CAN malfunction
(1) The letters at the beginning of each DTC are only displayed when using the M-MDS, and refer to the following: B= Body system, P= Powertrain system, U= Network communication system.
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