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.
2011 Volvo S80 Base, 3.2 95FACTORY OEM SERVICE PROCEDURE
Headlamp Control Module (HCM) DTCS
HEADLAMP CONTROL MODULE (HCM) - DTC INDEX
| DTC | Volvo Code | Description |
|---|---|---|
| B103C | HCM-B103C04 | Left Headlamp Control. General Failure Information. System Internal Failures |
| B103D | HCM-B103D04 | Right Headlamp Control. General Failure Information. System Internal Failures |
| B1040 | HCM-B104076 | Lamp Unit. Mechanical Failures. Wrong mounting position |
| B1041 | HCM-B104154 | Levelling Control. System Programming Failures. Missing calibration |
| B1042 | HCM-B104251 | Automatic Vertical Aim Control. System Programming Failures. Not programmed |
| B1043 | HCM-B104301 | Front Axle Sensor. General Failure Information. General electrical failure |
| B1043 | HCM-B10431C | Front Axle Sensor. General Electrical Failures. Circuit voltage out of range |
| B1044 | HCM-B104401 | Rear Axle Sensor. General Failure Information. General electrical failure |
| B1044 | HCM-B10441C | Rear Axle Sensor. General Electrical Failures. Circuit voltage out of range |
| B1A57 | HCM-B1A5701 | Left Headlamp Levelling Motor Circuit. General Failure Information. General electrical failure |
| B1A58 | HCM-B1A5801 | Right Headlamp Levelling Motor Circuit. General Failure Information. General electrical failure |
| B1D64 | HCM-B1D6401 | Left Headlamp Swivelling Motor Circuit. General Failure Information. General electrical failure |
| B1D64 | HCM-B1D6477 | Left Headlamp Swivelling Motor Circuit. Mechanical Failures. Commanded position not reachable |
| B1D65 | HCM-B1D6501 | Right Headlamp Swivelling Motor Circuit. General Failure Information. General electrical failure |
| B1D65 | HCM-B1D6577 | Left Headlamp Swivelling Motor Circuit. Mechanical Failures. Commanded position not reachable |
| B1D66 | HCM-B1D6601 | Left Headlamp Power Module. General Failure Information. General electrical failure |
| B1D67 | HCM-B1D6701 | Right Headlamp Power Module. General Failure Information. General electrical failure |
| B1D68 | HCM-B1D6801 | Left Headlamp Swivelling Feedback Sensor Circuit. General Failure Information. General electrical failure |
| B1D69 | HCM-B1D6901 | Right Headlamp Swivelling Feedback Sensor Circuit. General Failure Information. General electrical failure |
| U0001 | HCM-U000100 | High Speed CAN Communication Bus. General Failure Information. No sub type information |
| U0100 | HCM-U010000 | Lost Communication With Engine control module. Bus Signal/Message Failures. Missing message |
| U0121 | HCM-U012100 | Lost Communication With Brake Control Module. Bus Signal/Message Failures. Missing message |
| U0122 | HCM-U012200 | Lost Communication With Suspension module. Bus Signal/Message Failures. Missing message |
| U0126 | HCM-U012600 | Lost Communication With Steering Angle Sensor Module. Bus Signal/Message Failures. Missing message |
| U0140 | HCM-U014000 | Lost Communication With Central electronic module. General Failure Information. No sub type information |
| U0300 | HCM-U030000 | Internal Control Module Software Incompatibility. General Failure Information. No sub type information |
| U0401 | HCM-U040181 | Invalid Data Received From Engine control module. Bus Signal/Message Failures. Invalid serial data received |
| U0418 | HCM-U041881 | Invalid Data Received From Brake Control Module. Bus Signal/Message Failures. Invalid serial data received |
| U0428 | HCM-U042881 | Invalid Data Received From Steering Angle Sensor Module. Bus Signal/Message Failures. Invalid serial data received |
| U043A | HCM-U043A86 | Invalid Data Received From Suspension Control Module "B". Bus Signal/Message Failures. Signal invalid |
| U0542 | HCM-U054283 | Invalid Data Received From Headlamp Control Module "A". Bus Signal/Message Failures. Value of signal protection calculation incorrect |
| U0542 | HCM-U054286 | Invalid Data Received From Headlamp Control Module "A". Bus Signal/Message Failures. Signal invalid |
| U0543 | HCM-U054383 | Invalid Data Received From Headlamp Control Module "B". Bus Signal/Message Failures. Value of signal protection calculation incorrect |
| U0543 | HCM-U054386 | Invalid Data Received From Headlamp Control Module "B". Bus Signal/Message Failures. Signal invalid |
| U1A38 | HCM-U1A3801 | Lost Communication With Left Headlamp Module. General Failure Information. General electrical failure |
| U1A38 | HCM-U1A3887 | Lost Communication With Left Headlamp Module. Bus Signal/Message Failures. Missing message |
| U1A39 | HCM-U1A3901 | Lost Communication With Right Headlamp Module. General Failure Information. General electrical failure |
| U1A39 | HCM-U1A3987 | Lost Communication With Right Headlamp Module. Bus Signal/Message Failures. Missing message |
| U2100 | HCM-U210000 | Control Module Not Configured. General Failure Information. No sub type information |
| U2101 | HCM-U210100 | Control Module Configuration Incompatible. General Failure Information. No sub type information |
| U3000 | HCM-U300004 | Control Module. General Failure Information. System Internal Failures |
| U3003 | HCM-U300316 | Battery Voltage. General Electrical Failures. Circuit voltage below threshold |
| U3003 | HCM-U300317 | Battery Voltage. General Electrical Failures. Circuit voltage above threshold |
| U3003 | HCM-U300362 | Battery Voltage. Algorithm Based Failures. Signal compare failure |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
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