Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMAZDA2011CX-7 I SPORT, 2.5 5REPAIR AND DIAGNOSISGENERAL INFORMATIONDTC INDEXENTERTAINMENT SYSTEM DTCSAUDIO
2011 Mazda CX-7 i Sport, 2.5 5
Entertainment System DTCS: Audio
2011 Mazda CX-7 i Sport, 2.5 5SECTION Audio
AUDIO DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Detection | Reference |
|---|---|---|
| B1022:07 | Audio unit internal malfunction | (See DTC: B1022:07, 21:ER19 [AUDIO] .) |
| B1134:23 | Steering switch circuit malfunction | (See DTC: B1134:23, 26:ER85, DEVICE CORD 26/ERROR CORD 85 [BLUETOOTH SYSTEM (HANDS-FREE TELEPHONE (HF/TEL) SYSTEM)] .) |
| B116A:12 | Microphone circuit malfunction | (See DTC: B116A:12, 26:ER82, DEVICE CORD 26/ERROR CORD 82 [BLUETOOTH SYSTEM (HANDS-FREE TELEPHONE (HF/TEL) SYSTEM)] .) |
| B116A:13 | Microphone circuit malfunction | (See DTC: B116A:13, 26:ER84, DEVICE CORD 26/ERROR CORD 84 [BLUETOOTH SYSTEM (HANDS-FREE TELEPHONE (HF/TEL) SYSTEM)] .) |
| B116A:16 | Microphone circuit malfunction | (See DTC: B116A:16, 26:ER83, DEVICE CORD 26/ERROR CORD 83 [BLUETOOTH SYSTEM (HANDS-FREE TELEPHONE (HF/TEL) SYSTEM)] .) |
| B116A:44 | Bluetooth unit internal malfunction | (See DTC: B116A:44, 26:ER86, DEVICE CORD 26/ERROR CORD 86 [BLUETOOTH SYSTEM (HANDS-FREE TELEPHONE (HF/TEL) SYSTEM)] .) |
| B1188:64 | Audio unit internal malfunction | (See DTC: B1188:64, 10:ER07, 22:ER07 [AUDIO] .) |
| B1238:49 | Audio amplifier circuit malfunction | (See DTC: B1238:49, 23:ER03 [AUDIO] .) |
| B1238:98 | Audio amplifier internal malfunction | (See DTC: B1238:98, 23:ER23 [AUDIO] .) |
| B1A89:13 | Communication error between SIRIUS satellite radio unit and SIRIUS satellite radio antenna | (See DTC: B1A89:13, 11:ER03 [AUDIO] .) |
| B1D19:71 | Audio unit internal malfunction | (See DTC: B1D19:71, 10:ER02, 22:ER02 [AUDIO] .) |
| B1D19:79 | Audio unit internal malfunction | (See DTC: B1D19:79, 10:ER01, 22:ER01 [AUDIO] .) |
| B1D19:96 | Audio unit internal malfunction | (See DTC: B1D19:96, 10:ER10, 22:ER10 [AUDIO] .) |
| U0010:88 | CAN system communication error | (See FOREWORD [MULTIPLEX COMMUNICATION SYSTEM (L3 WITH TC)] .) (See FOREWORD [MULTIPLEX COMMUNICATION SYSTEM (L5)] .) |
| U0155:00 | Communication error to instrument cluster | |
| U0156:00 | Communication error to multi information display | |
| U0186:00 | CAN system communication error | |
| U0193:00 | Communication error to SIRIUS satellite radio unit | |
| U0197:00 | Communication error to Bluetooth unit | |
| U0423:68 | Invalid date received from Instrument cluster | |
| U0498:68 | CAN system communication error | |
| U3000:04 | Audio unit internal malfunction | (See DTC: U3000:04, 09:ER22 [AUDIO] .) |
| U3000:09 | Audio unit internal malfunction | (See DTC: U3000:09, 09:ER21 [AUDIO] .) |
| U3003:16 | Audio unit power supply voltage is low | (See DTC: U3003:16, 09:ER20 [AUDIO] .) |
| - | DTC is not recorded. | - |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.