Advanced Keyless System DTCS

2008 Mazda CX-7 Touring, 2.3 3, AWDSECTION Advanced Keyless System DTCS
ADVANCED KEYLESS SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) LIST

DTC Description Action
B1342 Keyless control module internal malfunction DTC B1342[ADVANCED KEYLESS SYSTEM]
B1134 Unprogrammed card key DTC B1134[ADVANCED KEYLESS SYSTEM]
B2477 Configuration error DTC B2477[ADVANCED KEYLESS SYSTEM]
B1317 Keyless control module power supply voltage increases. DTC B1317[ADVANCED KEYLESS SYSTEM]
B1318 Keyless control module power supply voltage decreases DTC B1318[ADVANCED KEYLESS SYSTEM]
B2170 Push switch (Steering lock unit) DTC B2170[ADVANCED KEYLESS SYSTEM]
B1126 Steering lock unit internal malfunction DTC B1126[ADVANCED KEYLESS SYSTEM]
U0236 Steering lock unit communication system DTC U0236[ADVANCED KEYLESS SYSTEM]
B1093 Steering lock unit communication error DTC B1093[ADVANCED KEYLESS SYSTEM]
U0214 Keyless receiver DTC U0214[ADVANCED KEYLESS SYSTEM]
B1133 Keyless antenna (exterior, RF) DTC B1133[ADVANCED KEYLESS SYSTEM]
B1132 Keyless antenna (exterior, LF) DTC B1132[ADVANCED KEYLESS SYSTEM]
B1128 Keyless antenna (Interior, rear) DTC B1128[ADVANCED KEYLESS SYSTEM]
B1131 Keyless antenna (exterior, rear) DTC B1131 [ADVANCED KEYLESS SYSTEM]
B1129 Keyless antenna (Interior, middle) DTC B1129[ADVANCED KEYLESS SYSTEM]
B112A Keyless antenna (Interior, front) DTC B112A[ADVANCED KEYLESS SYSTEM]
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.