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 DTCS2018 2018 2019
2018 Honda Ridgeline Black Edition
2018 2018 2019
2018 Honda Ridgeline Black EditionSECTION 2018 2018 2019
| 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 |
| DTC | Description |
|---|---|
| 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 |
| 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.