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 MANUALSACURA2018RLX BASEREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSDTC INDEX (EXCEPT HYBRID)KEYLESS ACCESS BACKUP CONTROL UNIT DTCS
2018 Acura RLX Base
Keyless Access Backup Control Unit DTCS
2018 Acura RLX BaseSECTION Keyless Access Backup Control Unit DTCS
KEYLESS ACCESS BACKUP CONTROL UNIT DIAGNOSTIC TROUBLE CODE (DTC) INDENTIFICATION
| DTC | Description | DTC type |
|---|---|---|
| B2601 | Parking sensor CPU error | Internal error |
| B2602 | Parking sensor EEPROM error | Internal error |
| B2625 | Left front sensor failure | Signal error |
| B2628 | Right front sensor failure | Signal error |
| B2629 | Left rear sensor failure | Signal error |
| B2630 | Center left rear sensor failure | Signal error |
| B2631 | Center right rear sensor failure | Signal error |
| B2632 | Right rear sensor failure | Signal error |
| B2635 | IND erroneous lighting | Signal error |
| B2636 | Vehicle status combination error | Signal error |
| B2637 | Sensor power failure | Signal error |
| B2638 | Front left sensor bus failure | Signal error |
| B2641 | Front right sensor bus failure | Signal error |
| B2642 | Rear left sensor bus failure | Signal error |
| B2643 | Rear left center sensor bus failure | Signal error |
| B2644 | Rear right center sensor bus failure | Signal error |
| B2645 | Rear right sensor bus failure | Signal error |
| U0155 | Lost communication with gauge control module | Loss of communication |
| U1280 | B-CAN communication bus line error (BUS-OFF) | Loss of communication |
| U1282 | Lost communication with MICU | 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.