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 MANUALSHONDA2020CR-V HYBRID EXREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSDTC INDEX (HYBRID)RELAY CONTROL MODULE DTCS
2020 Honda CR-V Hybrid EX
Relay Control Module DTCS
2020 Honda CR-V Hybrid EXSECTION Relay Control Module DTCS
| DTC | Description | DTC type |
|---|---|---|
| B1051 | Relay control module internal (CPU) error | Internal error |
| B1052 | Relay control module internal (EEPROM) error | Internal error |
| B1075 | Headlight switch malfunction | Signal error |
| B1080 | Power supply circuit (IG1 line) input error for Relay Control Module and MICU | Signal error |
| B1085 | Head Light Low Beam Power Source Abnormality | Signal error |
| B108A | Right Side Parking Light Circuit Shorted | Signal error |
| B108B | Left Side Parking Light Circuit Shorted | Signal error |
| B108C | Right Side Head Light Low Beam Circuit Shorted | Signal error |
| B108D | Left Side Head Light Low Beam Circuit Shorted | Signal error |
| B108E | Right Side Head Light High Beam Circuit Shorted | Signal error |
| B108F | Left Side Head Light High Beam Circuit Shorted | Signal error |
| B1090 | Illumination Circuit Shorted | Signal error |
| B1091 | DRL Circuit Shorted | Signal error |
| B1092 | Interior Light Cut Circuit Shorted | Signal error |
| U1280 | B-CAN communication bus line error (BUS-OFF) | Loss of communication |
| U1281 | Relay control module lost communication with MICU (MICU frame) | Loss of communication |
| U128D | Relay control module lost communication with gauge control module (VSP/NE frame) | 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.