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.
2012 Mazda 5 TouringFACTORY OEM SERVICE PROCEDURE
Body Control System Diagnostic Trouble Codes
BODY CONTROL SYSTEM DIAGNOSTIC TROUBLE CODES
| DTC | Description | Reference | ||||||
|---|---|---|---|---|---|---|---|---|
| B1C45:12 | Windshield wiper motor (auto stop switch) circuit malfunction | (See DTC B1C45:12 [BCM] .) | ||||||
| B1D35:11 | Hazard warning switch circuit malfunction | (See DTC B1D35:11 [BCM] .) | ||||||
| B1D36:11 | Turn switch circuit malfunction | (See DTC B1D36:11 [BCM] .) | ||||||
| B10AD:49(1) | Rain sensor internal malfunction | (See DTC B10AD:49 [BCM] .) | ||||||
| B10AD:87(1) | Communication error between rain sensor and BCM | (See DTC B10AD:87 [BCM] .) | ||||||
| B10D0:11 | Liftgate opener switch circuit malfunction | (See DTC B10D0:11 [BCM] .) | ||||||
| B1007:11 | Headlight high circuit malfunction | (See DTC B1007:11 [BCM] .) | ||||||
| B1008:11 | Windshield wiper switch circuit malfunction | (See DTC B1008:11 [BCM] .) | ||||||
| B1048:13 | Brake fluid level sensor circuit malfunction | (See DTC B1048:13 [BCM] .) | ||||||
| B1051:11 | Windshield washer switch circuit malfunction | (See DTC B1051:11 [BCM] ) | ||||||
| B1052:11 | Rear washer switch circuit malfunction | (See DTC B1052:11 [BCM] .) | ||||||
| B1079:13(2) | Hood latch switch circuit malfunction | (See DTC B1079:13 [BCM] .) | ||||||
| B108F:16 | Door lock switch circuit malfunction | (See DTC B108F:16 [BCM] .) | ||||||
| B109E:83 | Error signal from keyless receiver | (See DTC B109E:83 [BCM] .) | ||||||
| B109E:87 | Communication error between keyless receiver and BCM | (See DTC B109E:87 [BCM] .) | ||||||
| B11C0:11 | Sliding door switch (RH) circuit malfunction | (See DTC B11C0:11 [BCM] .) | ||||||
| B11C1:11 | Sliding door switch (LH) circuit malfunction | (See DTC B11C1:11 [BCM] .) | ||||||
| B11DA:16 | Front door key cylinder switch (LH) circuit malfunction | (See DTC B11DA:16 [BCM] .) | ||||||
| B11DC:11 | Rear wiper switch circuit malfunction | (See DTC B11DC:11 [BCM] .) | ||||||
| B1172:13 | Front door lock-link switch (LH) unlock signal circuit malfunction | (See DTC B1172:13 [BCM] .) | ||||||
| B1174:13 | Door lock-link switch circuit malfunction | (See DTC B1174:13 [BCM] .) | ||||||
| B1175:13 | Front door latch switch (LH) circuit malfunction | (See DTC B1175:13 [BCM] .) | ||||||
| B1176:13 | Front door latch switch (RH) circuit malfunction | (See DTC B1176:13 [BCM] .) | ||||||
| B1178:11 | Liftgate latch switch circuit malfunction | (See DTC B1178:11 [BCM] .) | ||||||
| B126A:11 | Front door lock-link switch (LH) lock signal circuit malfunction | (See DTC B126A:11 [BCM] .) | ||||||
| C0051:04 | Steering angle sensor malfunction | (See DTC C0051:04 [BCM] .) | ||||||
| C0051:2F | Error signal from steering angle sensor | (See DTC C0051:2F/C0052:11/C0052:13/C0053:11/C0053:13/C0054:11/C0054:13/C0055:11/C0055:13 [BCM] .) | ||||||
| C0052:11 | Steering angle sensor A signal input circuit malfunction | |||||||
| C0052:13 | ||||||||
| C0053:11 | Steering angle sensor B signal input circuit malfunction | |||||||
| C0053:13 | ||||||||
| C0054:11 | Steering angle sensor C signal input circuit malfunction | |||||||
| C0054:13 | ||||||||
| C0055:11 | Steering angle sensor Z signal input circuit malfunction | |||||||
| C0055:13 | ||||||||
| C1137:12 | ATX
MTX
|
(See DTC C1137:12 [BCM] .) | ||||||
| P0070:14 | Ambient temperature sensor circuit malfunction | (See DTC P0070:14 [BCM] .) | ||||||
| P1536:13 | Parking brake switch circuit malfunction | (See DTC P1536:13 [BCM] .) | ||||||
| U0001:88 | CAN system communication error (HS-CAN) | (See DTC U0001:88/U0100:00/U0101:00/U0121:00/U0151:00 [BCM] .) | ||||||
| U0100:00 | Communication error to PCM | |||||||
| U0101:00(3) | Communication error to TCM | |||||||
| U0121:00 | Communication error to DSC HU/CM | |||||||
| U0151:00 | Communication error to SAS control module | |||||||
| U0300:00 | BCM configuration error | (See DTC U0300:00 [BCM] .) | ||||||
| U0401:68 | Signal error from PCM | (See DTC U0401:68 [BCM] .) | ||||||
| U2100:00 | BCM configuration error | (See DTC U2100:00 [BCM] .) | ||||||
| U3000:04 | BCM internal malfunction | (See DTC U3000:04 [BCM] .) | ||||||
| U3003:16 | BCM power supply circuit malfunction | (See DTC U3003:16 [BCM] .) | ||||||
| U3003:17 | BCM power supply circuit malfunction | (See DTC U3003:17 [BCM] .) | ||||||
|
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Factory Service Tools
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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.