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.
2008 Volvo V70FACTORY OEM SERVICE PROCEDURE
Headlamp Control Module (HCM) DTCS
HEADLAMP CONTROL MODULE (HCM) - DTC INDEX
| DTC | Description |
|---|---|
| HCM-B103C04 | Left Headlamp Control. General Failure Information. System Internal Failures |
| HCM-B103D04 | Right Headlamp Control. General Failure Information. System Internal Failures |
| HCM-B104076 | Lamp Unit. Mechanical Failures. Wrong mounting position |
| HCM-B104154 | Levelling Control. System Programming Failures. Missing calibration |
| HCM-B104251 | Automatic Vertical Aim Control. System Programming Failures. Not programmed |
| HCM-B104301 | Front Axle Sensor. General Failure Information. General electrical failure |
| HCM-B10431C | Front Axle Sensor. General Electrical Failures. Circuit voltage out of range |
| HCM-B104401 | Rear Axle Sensor. General Failure Information. General electrical failure |
| HCM-B10441C | Rear Axle Sensor. General Electrical Failures. Circuit voltage out of range |
| HCM-B1A5701 | Left Headlamp Levelling Motor Circuit. General Failure Information. General electrical failure |
| HCM-B1A5801 | Right Headlamp Levelling Motor Circuit. General Failure Information. General electrical failure |
| HCM-B1D6401 | Left Headlamp Swivelling Motor Circuit. General Failure Information. General electrical failure |
| HCM-B1D6477 | Left Headlamp Swivelling Motor Circuit. Mechanical Failures. Commanded position not reachable |
| HCM-B1D6501 | Right Headlamp Swivelling Motor Circuit. General Failure Information. General electrical failure |
| HCM-B1D6577 | Left Headlamp Swivelling Motor Circuit. Mechanical Failures. Commanded position not reachable |
| HCM-B1D6601 | Left Headlamp Power Module. General Failure Information. General electrical failure |
| HCM-B1D6701 | Right Headlamp Power Module. General Failure Information. General electrical failure |
| HCM-B1D6801 | Left Headlamp Swivelling Feedback Sensor Circuit. General Failure Information. General electrical failure |
| HCM-B1D6901 | Right Headlamp Swivelling Feedback Sensor Circuit. General Failure Information. General electrical failure |
| HCM-U000100 | High Speed CAN Communication Bus. General Failure Information. No sub type information |
| HCM-U010000 | Lost Communication With Engine control module. Bus Signal/Message Failures. Missing message |
| HCM-U012100 | Lost Communication With Brake Control Module. Bus Signal/Message Failures. Missing message |
| HCM-U012200 | Lost Communication With Suspension module. Bus Signal/Message Failures. Missing message |
| HCM-U012600 | Lost Communication With Steering Angle Sensor Module. Bus Signal/Message Failures. Missing message |
| HCM-U014000 | Lost Communication With Central electronic module. General Failure Information. No sub type information |
| HCM-U030000 | Internal Control Module Software Incompatibility. General Failure Information. No sub type information |
| HCM-U040181 | Invalid Data Received From Engine control module. Bus Signal/Message Failures. Invalid serial data received |
| HCM-U041881 | Invalid Data Received From Brake Control Module. Bus Signal/Message Failures. Invalid serial data received |
| HCM-U042881 | Invalid Data Received From Steering Angle Sensor Module. Bus Signal/Message Failures. Invalid serial data received |
| HCM-U043A86 | Invalid Data Received From Suspension Control Module "B". Bus Signal/Message Failures. Signal invalid |
| HCM-U054283 | Invalid Data Received From Headlamp Control Module "A". Bus Signal/Message Failures. Value of signal protection calculation incorrect |
| HCM-U054286 | Invalid Data Received From Headlamp Control Module "A". Bus Signal/Message Failures. Signal invalid |
| HCM-U054383 | Invalid Data Received From Headlamp Control Module "B". Bus Signal/Message Failures. Value of signal protection calculation incorrect |
| HCM-U054386 | Invalid Data Received From Headlamp Control Module "B". Bus Signal/Message Failures. Signal invalid |
| HCM-U1A3801 | Lost Communication With Left Headlamp Module. General Failure Information. General electrical failure |
| HCM-U1A3887 | Lost Communication With Left Headlamp Module. Bus Signal/Message Failures. Missing message |
| HCM-U1A3901 | Lost Communication With Right Headlamp Module. General Failure Information. General electrical failure |
| HCM-U1A3987 | Lost Communication With Right Headlamp Module. Bus Signal/Message Failures. Missing message |
| HCM-U210000 | Control Module Not Configured. General Failure Information. No sub type information |
| HCM-U210100 | Control Module Configuration Incompatible. General Failure Information. No sub type information |
| HCM-U300004 | Control Module. General Failure Information. System Internal Failures |
| HCM-U300316 | Battery Voltage. General Electrical Failures. Circuit voltage below threshold |
| HCM-U300317 | Battery Voltage. General Electrical Failures. Circuit voltage above threshold |
| HCM-U300362 | Battery Voltage. Algorithm Based Failures. Signal compare failure |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.
