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Immobilizer System (Keyless Entry And System) Diagnostic Trouble Codes

IMMOBILIZER SYSTEM (WITH KEYLESS ENTRY AND START SYSTEM) DIAGNOSTIC TROUBLE CODES

DTC Description Reference
Security light flash pattern M-MDS display(1)
Instrument cluster PCM
11 B1681 P1260 No detected communication with the coil antenna SECURITY LIGHT 11, DTC B1681/P1260 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]
12 B2103 P1260
  • Coil antenna malfunction
  • The PCM determined a malfunction in the coil antenna even though it is normal
 SECURITY LIGHT 12, DTC B2103/P1260 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]
13 B1600 P1260 The key ID number data cannot be read SECURITY LIGHT 13, DTC B1600/P1260 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]
B2431 P1260 Key ID number registration error SECURITY LIGHT 13, DTC B2431/P1260 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]
14 B1602 P1260 The instrument cluster cannot read key ID number data normally SECURITY LIGHT 14, DTC B1602/P1260 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]
15 B1601 P1260 The instrument cluster has detected unregistered key ID number SECURITY LIGHT 15, DTC B1601/P1260 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]
16 U2510 P1260 Communication error between the instrument cluster and the PCM (no response) SECURITY LIGHT 16, DTC U2510/P1260 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]
21 B1213 P1260 Only one key ID number is registered SECURITY LIGHT 21, DTC B1213/P1260 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]
22 B2141 P1260 Communication error between the instrument cluster and the PCM (data transfer error) SECURITY LIGHT 22, DTC B2141/P1260 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]
23 B2139 P1260 ID number data in the PCM and the instrument cluster do not match SECURITY LIGHT 23, DTC B2139/P1260 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]
Not illuminated B1342 - Instrument cluster malfunction DTC B1342 [IMMOBILIZER SYSTEM (KEYLESS ENTRY 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.
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