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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSACURA2018RLX BASEREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSDTC INDEX (EXCEPT HYBRID)BODY CONTROL SYSTEM DTCSNOTES
2018 Acura RLX Base
Body Control System DTCS: Notes
2018 Acura RLX BaseSECTION Notes
BODY CONTROL MODULE DIAGNOSTIC TROUBLE CODE (DTC) INDENTIFICATION
| DTC | Two Drive Cycle Detection | Detection Item |
|---|---|---|
| U0029-00 | --- | CAN Gateway F-CAN ch A Bus Off |
| U0047-00 | --- | CAN Gateway F-CAN ch B Bus Off |
| U0056-00 | --- | CAN Gateway F-CAN ch C Bus Off |
| U3000-49 | --- | CAN Gateway Internal Failure |
| U3000-51 | --- | CAN Gateway Programming Error |
| B1002 | MICU internal error (EEPROM error) | Internal error |
| B1003 | MICU update error | Internal error |
| B1036 | IG1 power supply circuit malfunction | Signal error |
| B1275 | Headlight OFF position circuit malfunction | Signal error |
| B1276 | Headlight switch parking 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 |
| B1575 | Auto light sensor circuit malfunction | Signal error |
| U0199 | MICU lost communication with power window master switch | Loss of communication |
| U1280 | B-CAN communication bus line error (BUS-OFF) | Loss of communication |
| U128D | MICU lost communication with gauge control module | Loss of communication |
| U1291 | MICU lost communication with relay control module | Loss of communication |
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.