LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mazda >> 2011 >> 6 i Touring Plus >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> BCM DTCS
April 5, 2026: LEMON Manuals is launched! Read the announcement.

BCM DTCS

DIAGNOSTIC TROUBLE CODE (DTC) LIST

DTC No. Description Detection condition Page
B1035:11 Hazard warning switch circuit malfunction Short to ground detected in hazard warning switch circuit with the hazard warning switch off. (See DTC B1035:11 [BCM] .)
B1036:11 Turn switch circuit malfunction Short to ground detected in turn switch circuit with the turn switch off. (See DTC B1036:11 [BCM] .)
B10D0:11 Trunk lid opener switch (vehicle exterior) circuit malfunction Short to ground detected in trunk lid opener switch (vehicle exterior) circuit with the ignition switch ON. (See DTC B10D0:11 [BCM] .)
B1048:11 Brake fluid level sensor circuit malfunction Short to ground in brake fluid level sensor circuit with the brake fluid amount on the upper side of the minimum. (See DTC B1048:11 [BCM] .)
B1079:13 Hood latch switch circuit malfunction Open circuit detected in hood latch switch circuit with the hood closed (hood latch switch on). (See DTC B1079:13 [BCM] .)
B108F:16 Door lock switch circuit malfunction The voltage of door lock switch circuit is less than 3.75 V  with the door lock switch off. (See DTC B108F:16 [BCM] .)
B11C0:13 Rear door latch switch (driver-side) circuit malfunction Open circuit detected in rear door latch switch (driver-side) circuit with the rear door (driver-side) closed {rear door latch switch (driver-side) on}. (See DTC B11C0:13 [BCM] .)
B11C1:13 Rear door latch switch (passenger-side) circuit malfunction Open circuit detected in rear door latch switch (passenger-side) circuit with the rear door (passenger-side) closed {rear door latch switch (passenger-side) on}. (See DTC B11C1:13 [BCM] .)
B11DA:11 Front door key cylinder switch (driver-side) circuit malfunction Short to ground detected in front door key cylinder switch (driver-side) circuit with the front door key cylinder switch (driver-side) off. (See DTC B11DA:11 [BCM] .)
B113E:11 Trunk lid opener switch (vehicle interior) circuit malfunction Short to ground in trunk lid opener switch (vehicle interior) circuit with the trunk lid opener switch (vehicle interior) off. (See DTC B113E:11 [BCM] .)
B1172:11 Front door lock-link switch (driver-side) circuit malfunction Short to ground detected in front door lock-link switch (driver-side) unlock-side circuit with the front door lock-link switch (driver-side) locked. (See DTC B1172:11 [BCM] .)
B1172:13 Front door lock-link switch (driver-side) circuit malfunction Open circuit detected in front door lock-link switch (driver-side) unlock-side circuit with the front door lock-link switch (driver-side) unlocked. (See DTC B1172:13 [BCM] .)
B1174:11 Door lock-link switch circuit malfunction Short to ground detected in door lock-link switch circuit with the door lock-link switch locked. (See DTC B1174:11 [BCM] .)
B1174:13 Door lock-link switch circuit malfunction Open circuit detected in door lock-link switch circuit with the door lock-link switch unlocked. (See DTC B1174:13 [BCM] .)
B1175:13 Front door latch switch (driver-side) circuit malfunction Open circuit detected in front door latch switch (driver-side) circuit with the front door (driver-side) closed {front door latch switch (driver-side) on}. (See DTC B1175:13 [BCM] .)
B1176:13 Front door latch switch (passenger-side) circuit malfunction Open circuit detected in front door latch switch (passenger-side) circuit with the front door (passenger-side) closed {front door latch switch (passenger-side) on}. (See DTC B1176:13 [BCM] .)
B1178:11 Trunk lid latch switch circuit malfunction Short to ground detected in trunk lid latch switch circuit with the trunk closed (trunk lid latch switch off). (See DTC B1178:11 [BCM] .)
B126A:11 Front door lock-link switch (driver-side) circuit malfunction Short to ground detected in front door lock-link switch (driver-side) lock-side circuit with the front door lock-link switch (driver-side) unlocked. (See DTC B126A:11 [BCM] .)
B126A:13 Front door lock-link switch (driver-side) circuit malfunction Open circuit detected in front door lock-link switch (driver-side) lock-side circuit with the front door lock-link switch (driver-side) locked. (See DTC B126A:13 [BCM] .)
C005:04 Steering angle sensor internal malfunction
  • Z phase is abnormal.
  • Detected steering angle exceeds the specified value.
(See DTC C0051:04 [BCM] .)
C0051:2F Steering angle sensor signal error Detected error in a combination of signals from each sensor (A, B, C, D). (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 error The voltage lower than the specification is detected for 0.1 s. 
C0052:13 The voltage higher than the specification is detected for 0.1 s. 
C0053:11 Steering angle sensor B signal input circuit error The voltage lower than the specification is detected for 0.1 s. 
C0053:13 The voltage higher than the specification is detected for 0.1 s. 
C0054:11 Steering angle sensor C signal input circuit error The voltage lower than the specification is detected for 0.1 s. 
C0054:13 The voltage higher than the specification is detected for 0.1 s. 
C0055:11 Steering angle sensor D signal input circuit error The voltage lower than the specification is detected for 0.1 s. 
C0055:13 The voltage higher than the specification is detected for 0.1 s. 
C1137:12 MZR 2.5/ATX 
  • Transaxle range switch circuit malfunction
MZR 2.5/ATX 
  • Short to power supply in transaxle range switch circuit with the selector (ever in P or H position (transaxle range switch off).
(See DTC C1137:12 [BCM] .)
MZR 2.5/MTX 
  • Back-up tight switch circuit malfunction
MZR 2.5/MTX 
  • Short to power supply in back-up tight switch circuit with the shit lever in NEUTRAL {back-up light switch off).
MZI 3.7 V6 
  • Back-up tight relay circuit malfunction
MZI 3.7 V6 
  • Short to power supply in back-up light relay circuit with the selector fever in P or N position.
P1536:13 Parking brake switch circuit malfunction Open circuit detected in parking brake switch circuit with the parking brake fever applied (parking brake switch on). (See DTC P1536:13 [BCM] .)
U0001:88 Unit communication error (HS-CAN) CAN system error with BCM. (See FOREWORD [MULTIPLEX COMMUNICATION SYSTEM] .)
U0100:00 Communication error to PCM Communication error between PCM and BCM.
U0101:00 Communication error to TCM Communication error between TCM and BCM.
U0151:00 Communication error to SAS control module Communication error between SAS control module and BCM.
U0214:00 Communication error to keyless control module Communication error between keyless control module and BCM.
U0300:00 BCM configuration setting invalid
WARNING:
  • Detection conditions are for understanding the DTC outline before performing an inspection. Performing an inspection according to only the detection conditions may cause injury due to an operating error, or damage the system. When performing an inspection, always follow the inspection procedure.
  • BCM configuration setting not done correctly.
(See DTC U0300:00 [BCM] .)
U0401:68 Signal error from PCM Correct data cannot be received from PCM. (See DTC U0401:68 [BCM] .)
U0402:68 Signal error from TCM Correct data cannot be received from TCM. (See DTC U0402:68 [BCM] .)
U2100:00 BCM configuration not set
WARNING:
  • Detection conditions are for understanding the DTC outline before performing an inspection. Performing an inspection according to only the detection conditions may cause injury due to an operating error, or damage the system. When performing an inspection, always follow the inspection procedure.
  • BCM configuration setting not done correctly.
(See DTC U2100:00 [BCM] .)
U3000:04 BCM internal malfunction BCM internal ECU is faulted. (See DTC U3000:04 [BCM] .)
U3003:16 BCM power supply circuit malfunction BCM power supply voltage is low (less than 9 V)  . (See DTC U3003:16/U3003:17 [BCM] .)
U3003:17 BCM power supply voltage is high (more than 16 V).