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 XC70FACTORY OEM SERVICE PROCEDURE
Infotainment Control Module (ICM) DTCS
INFOTAINMENT CONTROL MODULE (ICM) - DTC INDEX
| DTC | Volvo Code | Description |
|---|---|---|
| B1049 | ICM-B104949 | Display Heater. System Internal Failures. Internal electronic failure |
| B1049 | ICM-B10494B | Display Heater. System Internal Failures. Over temperature |
| B104A | ICM-B104A23 | Button 1. General Signal Failures. Signal stuck low |
| B104B | ICM-B104B23 | Button 2. General Signal Failures. Signal stuck low |
| B104C | ICM-B104C23 | Button 3. General Signal Failures. Signal stuck low |
| B104D | ICM-B104D23 | Button 4. General Signal Failures. Signal stuck low |
| B104E | ICM-B104E23 | Button 5. General Signal Failures. Signal stuck low |
| B1087 | ICM-B108783 | LIN Bus A. Bus Signal/Message Failures. Value of signal protection calculation incorrect |
| B1087 | ICM-B108786 | LIN Bus A. Bus Signal/Message Failures. Signal invalid |
| B1087 | ICM-B108787 | LIN Bus A. Bus Signal/Message Failures. Missing message |
| B1087 | ICM-B108788 | LIN Bus A. Bus Signal/Message Failures. Bus off |
| U0010 | ICM-U001000 | Medium Speed CAN Communication Bus. General Failure Information. No sub type information |
| U0010 | ICM-U001048 | Medium Speed CAN Communication Bus. System Internal Failures. Supervision software failure |
| U0140 | ICM-U014000 | Lost Communication With Central electronic module. General Failure Information. No sub type information |
| U0156 | ICM-U01564A | Lost Communication With Infotainment control module. System Internal Failures. Incorrect component installed |
| U0163 | ICM-U016300 | Lost Communication With Navigation Control Module. General Failure Information. No sub type information |
| U0163 | ICM-U01634A | Lost Communication With Navigation Control Module. System Internal Failures. Incorrect component installed |
| U0164 | ICM-U016400 | Lost Communication With Climate control unit. General Failure Information. No sub type information |
| U0184 | ICM-U018400 | Lost Communication With Audio module. General Failure Information. No sub type information |
| U0184 | ICM-U01844A | Lost Communication With Audio module. System Internal Failures. Incorrect component installed |
| U0186 | ICM-U018600 | Lost Communication With Audio amplifier. General Failure Information. No sub type information |
| U0186 | ICM-U01864A | Lost Communication With Audio amplifier. System Internal Failures. Incorrect component installed |
| U0193 | ICM-U019300 | Lost Communication With "Digital Audio Control Module A". General Failure Information. No sub type information |
| U0193 | ICM-U01934A | Lost Communication With "Digital Audio Control Module A". System Internal Failures. Incorrect component installed |
| U0197 | ICM-U019700 | Lost Communication With Telephone Control Module. General Failure Information. No sub type information |
| U0197 | ICM-U01974A | Lost Communication With Telephone Control Module. System Internal Failures. Incorrect component installed |
| U0198 | ICM-U019800 | Lost Communication With Telematic Control Module. General Failure Information. No sub type information |
| U0198 | ICM-U01984A | Lost Communication With Telematic Control Module. System Internal Failures. Incorrect component installed |
| U0235 | ICM-U023500 | Lost Communication With Forward sensing module. General Failure Information. No sub type information |
| U0253 | ICM-U025300 | Lost Communication With Accessory USB Unit. General Failure Information. No sub type information |
| U0253 | ICM-U02534A | Lost Communication With Accessory USB Unit. System Internal Failures. Incorrect component installed |
| U0257 | ICM-U02574A | Lost Communication With Front Controls/Display Interface Module. System Internal Failures. Incorrect component installed |
| U0262 | ICM-U026200 | Lost Communication With Subwoofer Module. General Failure Information. No sub type information |
| U0262 | ICM-U02624A | Lost Communication With Subwoofer Module. System Internal Failures. Incorrect component installed |
| U0300 | ICM-U030000 | Internal Control Module Software Incompatibility. General Failure Information. No sub type information |
| U0300 | ICM-U030051 | Internal Control Module Software Incompatibility. System Programming Failures. Not programmed |
| U1A15 | ICM-U1A1587 | Incomplete MOST Ring Reported By ICM. Bus Signal/Message Failures. Missing message |
| U1A24 | ICM-U1A2400 | MOST Ring Complete. No Communication. General Failure Information. No sub type information |
| U3003 | ICM-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:
- • 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.
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