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 MANUALSACURA2023RDX BASEREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSDTC INDEXBODY CONTROL SYSTEM DTCS
2023 Acura RDX Base
Body Control System DTCS
2023 Acura RDX BaseSECTION Body Control System DTCS
BODY CONTROL MODULE
| DTC | Description | DTC type |
|---|---|---|
| B1002 | BCM (body control module) internal error (EEPROM error) | Internal error |
| B1003 | BCM (body control module) PROGRAM error | Internal error |
| B1028 | Rear wiper motor (park) signal error | Signal error |
| B1036 | IG1 power supply circuit malfunction | Signal error |
| B1038 | IMMOBILIZER F-CAN authentication ID not received | Signal error |
| B1039 | IMMOBILIZER F-CAN authentication ID unmatch | Signal error |
| B1040 | BCM (body control module) lost communication with front wiper | Loss of communication |
| B1041 | Front wiper motor malfunction | Signal error |
| B1042 | Front wiper security line error | Signal error |
| B1043 | Front wiper unit internal error (EEPROM error) | Signal error |
| B1085 | Headlight low light source abnormality | Signal error |
| B1275 | Headlight OFF position circuit malfunction | Signal error |
| B1276 | Headlight switch parking (small) position circuit malfunction | Signal error |
| B1277 | Headlight AUTO position circuit malfunction | Signal error |
| B1278 | Headlight ON position circuit malfunction | Signal error |
| B1279 | Dimmer switch circuit malfunction | Signal error |
| B1280 | Turn signal switch circuit malfunction | Signal error |
| B1281 | Front wiper MIST position circuit malfunction | Signal error |
| B1282 | Front wiper INT (AUTO) position circuit malfunction | Signal error |
| B1283 | Front wiper LOW position circuit malfunction | Signal error |
| B1284 | Front wiper HIGH position circuit malfunction | Signal error |
| B2352 | Rain light sensor unit internal error (EEPROM error) | Internal error |
| B2375 | Rain sensing malfunction | Signal error |
| B2376 | Light sensing malfunction | Signal error |
| U0073 | F-CAN Communication bus line error (BUS-OFF) | Loss of communication |
| U0100 | BCM (body control module) lost communication with ECM/PCM | Loss of communication |
| U0122 | BCM (body control module) lost communication with VSA/ABS | Loss of communication |
| U1280 | B-CAN communication bus line error (BUS-OFF) | Loss of communication |
| U128D | BCM (body control module) lost communication with gauge control module | Loss of communication |
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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.