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 ACCCESS POWER CONTROL UNIT DTCS2020
2018 Honda Ridgeline Black Edition
Keyless ACCCESS Power Control Unit DTCS: 2020
2018 Honda Ridgeline Black EditionSECTION 2020
| DTC | Description |
|---|---|
| B12C5 | Engine start/stop switch failure |
| B12C6 | Electric steering lock switch C/D monitor circuit failure |
| B12C7 | Electric steering lock motor circuit failure |
| B12D0 | Power control unit IG1A circuit error |
| B12D1 | Power control unit IG1B circuit error |
| B12D2 | Power control unit IG2 circuit error |
| B12D3 | Power control unit IG latch circuit error |
| B12E0 | Electric steering lock switch internal error |
| B12E1 | Electric steering lock motor internal error |
| B12E2 | Electric steering lock low level failure of MTRCUT1 |
| B12E3 | Electric steering lock high level failure of MTRCUT1 |
| B12E4 | Electric steering lock high level failure of MTRCUT2 |
| B12E5 | Incorrect assembly of control unit for electric steering lock equipped vehicle |
| B12F0 | Power control unit lost communication with electric steering lock |
| B12F3 | Power control unit lost communication with transmission control unit |
| U0073 | F-CAN communication bus line error |
| U0100 | Power control unit lost communication with PCM |
| U0122 | Power control unit lost communication with VSA modulator-control unit (VSA message) |
| U1280 | B-CAN communication bus line error (BUS-OFF) |
| U1281 | Power control unit lost communication with MICU |
| U128D | Power control unit lost communication with gauge control module |
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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.