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 MANUALSHONDA2020HR-V LX, FWDREPAIR AND DIAGNOSIS (SINGLE PAGE)GENERAL INFORMATIONDTC INDEXKEYLESS ACCESS POWER CONTROL UNIT (2016 2017 2018)
2020 Honda HR-V LX, FWD
Keyless Access Power Control Unit (2016 2017 2018)
2020 Honda HR-V LX, FWDSECTION Keyless Access Power Control Unit (2016 2017 2018)
Keyless Access Power Control Unit
KEYLESS ACCESS POWER CONTROL UNIT DIAGNOSTIC CODE IDENTIFICATION (2016 2017 2018) (B12C5-U128D)
| DTC | Description | DTC type |
|---|---|---|
| B12C5 | Engine start/stop switch failure | Internal error |
| B12C6*2 | Electric steering lock switch C/D monitor circuit failure | Internal error |
| B12C7*2 | Electric steering lock motor circuit failure | Internal error |
| B12D0 | Power control unit IG1A circuit error | Internal error |
| B12D1 | Power control unit IG1B circuit error | Internal error |
| B12D2 | Power control unit IG2 circuit error | Internal error |
| B12D3 | Power control unit IG latch circuit error | Internal error |
| B12E0*2 | Electric steering lock switch internal error | Internal error |
| B12E1*2 | Electric steering lock motor internal error | Internal error |
| B12E2*2 | Electric steering lock low level failure of MTRCUT1 | Signal error |
| B12E3*2 | Electric steering lock high level failure of MTRCUT1 | Signal error |
| B12E4*2 | Electric steering lock high level failure of MTRCUT2 | Signal error |
| B12E5*1 | Incorrect assembly of control unit for electric steering lock equipped vehicle | Signal error |
| B12F0*2 | Power control unit lost communication with electric steering lock | Loss of communication |
| U0073 | F-CAN communication bus line error | Loss of communication |
| U0100 | Power control unit lost communication with PCM | Loss of communication |
| U0122 | Power control unit lost communication with VSA modulator-control unit (VSA message) | Loss of communication |
| U1280 | B-CAN communication bus line error (BUS-OFF) | Loss of communication |
| U1281 | Power control unit lost communication with MICU | Loss of communication |
| U128D | Power control unit lost communication with gauge control module | Loss of communication |
*1: Without steering lock*2: With steering lock
RENDER: 1.0x
NO RELATED
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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.