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Immobilizer System Diagnostic Trouble Codes

IMMOBILIZER SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) LIST

DTC Detection condition Action
Security light flashing pattern M-MDS display (1)
Keyless control module PCM
11
G05986452Courtesy of MAZDA MOTORS CORP.
B1681 P1260 No detected communication with the coil antenna SECURITY LIGHT: 11, DTC B1681/P1260 [IMMOBILIZER SYSTEM]
12
G05986453Courtesy of MAZDA MOTORS CORP.
B2103 P1260 coil antenna malfunction SECURITY LIGHT: 12, DTC B2103/P1260 [IMMOBILIZER SYSTEM]
13
G05986454Courtesy of MAZDA MOTORS CORP.
B1600 P1260 The key ID number data cannot be read. SECURITY LIGHT: 13, DTC B1600/P1260 [IMMOBILIZER SYSTEM]
B2431 P1260 Key ID number registration error SECURITY LIGHT: 13, DTC B2431/P1260 [IMMOBILIZER SYSTEM]
14
G05986455Courtesy of MAZDA MOTORS CORP.
B1602 P1260 The keyless control module cannot read key ID number data normally. SECURITY LIGHT: 14, DTC B1602/P1260 [IMMOBILIZER SYSTEM]
15
G05986456Courtesy of MAZDA MOTORS CORP.
P1601 P1260 The keyless control module has detected unregistered key ID number. SECURITY LIGHT: 15, DTC B1601/P1260 [IMMOBILIZER SYSTEM]
16
G05986457Courtesy of MAZDA MOTORS CORP.
U2510 P1260 Communication error between the keyless control module and the PCM (no response) SECURITY LIGHT: 16, DTC U2510/P1260, U1147/P1260 [IMMOBILIZER SYSTEM]
U1147 P1260 Communication error between the keyless control module and the PCM (mismatched conditions)
21
G05986458Courtesy of MAZDA MOTORS CORP.
B1213 P1260 Only one key ID number is registered. SECURITY LIGHT: 21, DTC B1213/P1260 [IMMOBILIZER SYSTEM]
22
G05986459Courtesy of MAZDA MOTORS CORP.
B2141 P1260 Communication error between the keyless control module and the PCM (data transfer error) SECURITY LIGHT: 22, DTC B2141/P1260 [IMMOBILIZER SYSTEM]
23
G05986460Courtesy of MAZDA MOTORS CORP.
B2139 P1260 ID number data in the PCM and the keyless control module do not match. SECURITY LIGHT: 23, DTC B2139/P1260 [IMMOBILIZER SYSTEM]
Not illuminated B1342 - Keyless control module malfunction DTC B1342 (KEYLESS CONTROL MODULE) [IMMOBILIZER SYSTEM]
(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.