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 MANUALSHONDA2009CR-V EX, 2.4 RE3REPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTINFOTAINMENTHANDSFREELINK SYSTEMDTC TROUBLESHOOTING INDEX
2009 Honda CR-V EX, 2.4 RE3
DTC Troubleshooting Index
2009 Honda CR-V EX, 2.4 RE3SECTION DTC Troubleshooting Index
HandsFreeLink Control Unit
HANDSFREELINK CONTROL UNIT DTC TROUBLESHOOTING INDEX
| DTC | Description | DTC type |
|---|---|---|
| B1775 | Microphone input/output short to power/open (with navigation system) | Signal error |
| B1776 | Microphone input/output short to ground (with navigation system) | Signal error |
| B1779 | HFL switch or voice control switch (HFL TALK/HFL BACK buttons) circuit open/short to power | Signal error |
| B1780 | HFL switch (HFL TALK/HFL BACK buttons) circuit short | Signal error |
| B1792 | HandsFreeLink control unit internal error | Internal error |
| B1150;B1200;B1550;B1900;U1280 | Communication bus line error (BUS OFF) | 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.