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)QUICK LOOKUPSDTC INDEXAUTOMATIC LIGHTING CONTROL UNIT-SENSOR (2019 2020 2021)
2020 Honda HR-V LX, FWD
Automatic Lighting Control Unit-Sensor (2019 2020 2021)
2020 Honda HR-V LX, FWDSECTION Automatic Lighting Control Unit-Sensor (2019 2020 2021)
Automatic Lighting Control Unit-Sensor
AUTOMATIC LIGHTING CONTROL UNIT-SENSOR DIAGNOSTIC CODE IDENTIFICATION (2019 2020 2021) (B1575-U128D)
| DTC | Description | DTC type |
|---|---|---|
| B1575 | Auto light sensor error | Internal error |
| U1280 | BUS OFF state is detected by CAN controller | Loss of communication |
| U1281 | Auto light control unit lost communication with MICU | Loss of communication |
| U128D | Auto light control unit lost communication with gauge control module | 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.