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 MANUALSHONDA2018RIDGELINE BLACK EDITIONREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSDTC INDEXKEYLESS ACCESS CONTROL UNIT DTCS2020
2018 Honda Ridgeline Black Edition
Keyless Access Control Unit DTCS: 2020
2018 Honda Ridgeline Black EditionSECTION 2020
| DTC | Description |
|---|---|
| B1601 | Keyless access control unit internal (CPU) error |
| B1602 | Keyless access control unit internal (EEPROM) error |
| B1632 | MTR CONT signal error |
| B1640 | RF1 antenna not connected or malfunction |
| B1645 | Driver's door LF antenna circuit short |
| B1646 | Driver's door LF antenna circuit open |
| B1647 | Passenger's door LF antenna circuit short |
| B1648 | Passenger's door LF antenna circuit open |
| B1649 | Driver side rear passenger door LF antenna circuit short |
| B1650 | Driver side rear passenger door LF antenna circuit open |
| B1651 | Passenger side rear passenger door LF antenna circuit short |
| B1652 | Passenger side rear passenger door LF antenna circuit open |
| B1659 | Front interior LF antenna circuit short |
| B1660 | Front interior LF antenna circuit open |
| B1663 | Rear interior LF antenna circuit short |
| B1664 | Rear interior LF antenna circuit open |
| U1280 | Keyless access control unit communication bus line error (BUS-OFF) |
| U1281 | Keyless access control unit lost communication with MICU |
| DTC | Description |
|---|---|
| U128D | Keyless access control unit lost communication with gauge control module |
RENDER: 1.0x
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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.