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 XC90 Base, AWDFACTORY OEM SERVICE PROCEDURE
Differential Electronic Module (DEM) DTCS
DIFFERENTIAL ELECTRONIC MODULE (DEM) - DTC INDEX
| DTC | Description |
|---|---|
| DEM-P056017 | System voltage. General electrical fault. Too high voltage (B6324S, TF-80SC AWD) |
| DEM-P056017 | System voltage. General electrical fault. Too high voltage (B8444S, TF-80SC AWD) |
| DEM-P060749 | Control module performance. Internal fault. Electrical fault (B8444S, TF-80SC AWD) |
| DEM-P060749 | Control module performance. Internal fault. Electrical fault (B6324S, TF-80SC AWD) |
| DEM-P093211 | Hydraulic pressure sensor circuit. General electrical fault. Short circuit to ground. (B6324S, TF-80SC AWD; B8444S, TF-80SC AWD) |
| DEM-P093215 | Hydraulic pressure sensor circuit. General electrical fault. Short circuit to a voltage source or open circuit. (B6324S, TF-80SC AWD; B8444S, TF-80SC AWD) |
| DEM-P093711 | Oil temperature sensor circuit. General electrical fault. Short circuit to ground (B6324S, TF-80SC AWD; B8444S, TF-80SC AWD) |
| DEM-P093715 | Oil temperature sensor circuit. General electrical fault. Short circuit to a voltage source or open circuit. (B6324S, TF-80SC AWD; B8444S, TF-80SC AWD) |
| DEM-P093827 | Oil temperature sensor circuit within/outside the limits. General signal fault. Rate of signal change exceeds the limit. (B6324S, TF-80SC AWD; B8444S, TF-80SC AWD) |
| DEM-P096162 | Pressure regulation solenoid A control circuit within/outside the limits. Algorithm fault. Comparison fault (B6324S, TF-80SC AWD; B8444S, TF-80SC AWD) |
| DEM-P118854 | Calibration memory. Programming fault. No calibration stored. (B6324S, TF-80SC AWD) |
| DEM-P118854 | Calibration memory. Programming fault. No calibration stored. (B8444S, TF-80SC AWD) |
| DEM-P163568 | Tire/Axle Out of Acceptable Range. Algorithm Based Failures. Event information (B6324S, TF-80SC AWD) |
| DEM-P163568 | Tire/Axle Out of Acceptable Range. Algorithm Based Failures. Event information (B8444S, TF-80SC AWD) |
| DEM-P168912 | Solenoid circuit oil pressure regulation. General electrical fault. Short circuit to a voltage source (B6324S, TF-80SC AWD) |
| DEM-P168912 | Solenoid circuit oil pressure regulation. General electrical fault. Short circuit to a voltage source (B8444S, TF-80SC AWD) |
| DEM-P168914 | Solenoid circuit oil pressure regulation. General electrical fault. Short circuit to ground or open circuit (B6324S, TF-80SC AWD) |
| DEM-P168914 | Solenoid circuit oil pressure regulation. General electrical fault. Short circuit to ground or open circuit (B8444S, TF-80SC AWD) |
| DEM-P188912 | Oil pressure pump performance. General electrical fault. Short circuit to a voltage source (B6324S, TF-80SC AWD) |
| DEM-P188912 | Oil pressure pump performance. General electrical fault. Short circuit to a voltage source (B8444S, TF-80SC AWD) |
| DEM-P188914 | Oil pressure pump performance. General electrical fault. Short circuit to ground or open circuit (B6324S, TF-80SC AWD) |
| DEM-P188914 | Oil pressure pump performance. General electrical fault. Short circuit to ground or open circuit (B8444S, TF-80SC AWD) |
| DEM-P188974 | Oil Pressure Pump Performance. Mechanical Failures. Actuator slipping (B6324S, TF-80SC AWD; B8444S, TF-80SC AWD) |
| DEM-P188A68 | Differential Oil Temperature Too High/Too Low. Algorithm Based Failures. Event information (B6324S, TF-80SC AWD; B8444S, TF-80SC AWD) |
| DEM-U000100 | HS-CAN communication bus. General fault information. No information about the type of fault (B6324S, TF-80SC AWD) |
| DEM-U000100 | HS-CAN communication bus. General fault information. No information about the type of fault (B8444S, TF-80SC AWD) |
| DEM-U010000 | Failed communication with the Engine Control Module (ECM). General fault information. Type of fault not specified. (B6324S, TF-80SC AWD) |
| DEM-U010000 | Failed communication with the Engine Control Module (ECM). General fault information. Type of fault not specified. (B8444S, TF-80SC AWD) |
| DEM-U012900 | Failed communication with the Brake Control Module (BCM). General fault information. Type of fault not specified. (B6324S, TF-80SC AWD) |
| DEM-U012900 | Failed communication with the Brake Control Module (BCM). General fault information. Type of fault not specified. (B8444S, TF-80SC AWD) |
| DEM-U014000 | Failed communication with the Central Electronic Module (CEM). General fault information. No information about the type of fault (B6324S, TF-80SC AWD) |
| DEM-U014000 | Failed communication with the Central Electronic Module (CEM). General fault information. No information about the type of fault (B8444S, TF-80SC AWD) |
| DEM-U030000 | Internal software incompatible with the control module. General information. No information about the type of fault. (B6324S, TF-80SC AWD) |
| DEM-U030000 | Internal software incompatible with the control module. General information. No information about the type of fault. (B8444S, TF-80SC AWD) |
| DEM-U03004A | Internal software is incompatible with the control module. Internal fault. Wrong component (B6324S, TF-80SC AWD) |
| DEM-U03004A | Internal software is incompatible with the control module. Internal fault. Wrong component (B8444S, TF-80SC AWD) |
| DEM-U300362 | Battery voltage. Algorithm fault. Comparison fault (B6324S, TF-80SC AWD) |
| DEM-U300362 | Battery voltage. Algorithm fault. Comparison fault (B8444S, TF-80SC AWD) |
| DEM-XXXXXX | Unspecified diagnostic trouble code (DTC) for current control module version (B6324S, TF-80SC AWD) |
| DEM-XXXXXX | Unspecified diagnostic trouble code (DTC) for current control module version (B8444S, TF-80SC AWD) |
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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