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 XC90 Base, FWDFACTORY OEM SERVICE PROCEDURE
Differential Electronic Module (DEM) DTCS
DIFFERENTIAL ELECTRONIC MODULE (DEM) - DTC INDEX
| DTC | Description |
|---|---|
| DEM-P056017 | System Voltage. General Electrical Failures. Circuit voltage above threshold (B6324S5, TF-80SC AWD) |
| DEM-P056017 | System Voltage. General Electrical Failures. Circuit voltage above threshold (B8444S, TF-80SC AWD) |
| DEM-P060749 | Control Module Performance. System Internal Failures. Internal electronic failure (B6324S5, TF-80SC AWD) |
| DEM-P060749 | Control Module Performance. System Internal Failures. Internal electronic failure (B8444S, TF-80SC AWD) |
| DEM-P064F05 | Unauthorized Software/Calibration Detected. General Failure Information. System Programming Failures (B6324S5, TF-80SC AWD) |
| DEM-P064F05 | Unauthorized Software/Calibration Detected. General Failure Information. System Programming Failures (B8444S, TF-80SC AWD) |
| DEM-P066611 | PCM/ECM/TCM Internal Temperature Sensor Circuit. General Electrical Failures. Circuit short to ground (B6324S5, TF-80SC AWD) |
| DEM-P066611 | PCM/ECM/TCM Internal Temperature Sensor Circuit. General Electrical Failures. Circuit short to ground (B8444S, TF-80SC AWD) |
| DEM-P066615 | PCM/ECM/TCM Internal Temperature Sensor Circuit. General Electrical Failures. Circuit short to battery or open (B6324S5, TF-80SC AWD) |
| DEM-P066615 | PCM/ECM/TCM Internal Temperature Sensor Circuit. General Electrical Failures. Circuit short to battery or open (B8444S, TF-80SC AWD) |
| DEM-P066727 | PCM/ECM/TCM Internal Temperature Sensor Range/Performance. General Signal Failures. Signal rate of change above threshold (B6324S5, TF-80SC AWD) |
| DEM-P066727 | PCM/ECM/TCM Internal Temperature Sensor Range/Performance. General Signal Failures. Signal rate of change above threshold (B8444S, TF-80SC AWD) |
| DEM-P096162 | Pressure Control Solenoid A Control Circuit Range/Performance. Algorithm Based Failures. Signal compare failure (B6324S5, TF-80SC AWD) |
| DEM-P096162 | Pressure Control Solenoid A Control Circuit Range/Performance. Algorithm Based Failures. Signal compare failure (B8444S, TF-80SC AWD) |
| DEM-P118854 | Calibration Memory. System Programming Failures. Missing calibration (B6324S5, TF-80SC AWD) |
| DEM-P118854 | Calibration Memory. System Programming Failures. Missing calibration (B8444S, TF-80SC AWD) |
| DEM-P163568 | Tire/Axle Out of Acceptable Range. Algorithm Based Failures. Event information (B6324S5, TF-80SC AWD) |
| DEM-P163568 | Tire/Axle Out of Acceptable Range. Algorithm Based Failures. Event information (B8444S, TF-80SC AWD) |
| DEM-P168912 | Oil Pressure Control Solenoid Circuit. General Electrical Failures. Circuit short to battery (B6324S5, TF-80SC AWD) |
| DEM-P168912 | Oil Pressure Control Solenoid Circuit. General Electrical Failures. Circuit short to battery (B8444S, TF-80SC AWD) |
| DEM-P16891D | Oil Pressure Control Solenoid Circuit. General Electrical Failures. Circuit current out of range (B6324S5, TF-80SC AWD) |
| DEM-P16891D | Oil Pressure Control Solenoid Circuit. General Electrical Failures. Circuit current out of range (B8444S, TF-80SC AWD) |
| DEM-P188912 | Oil Pressure Pump Performance. General Electrical Failures. Circuit short to battery (B6324S5, TF-80SC AWD) |
| DEM-P188912 | Oil Pressure Pump Performance. General Electrical Failures. Circuit short to battery (B8444S, TF-80SC AWD) |
| DEM-P188914 | Oil Pressure Pump Performance. General Electrical Failures. Circuit short to ground or open (B6324S5, TF-80SC AWD) |
| DEM-P188914 | Oil Pressure Pump Performance. General Electrical Failures. Circuit short to ground or open (B8444S, TF-80SC AWD) |
| DEM-P188918 | Oil Pressure Pump Performance. General Electrical Failures. Circuit current below threshold (B6324S5, TF-80SC AWD) |
| DEM-P188918 | Oil Pressure Pump Performance. General Electrical Failures. Circuit current below threshold (B8444S, TF-80SC AWD) |
| DEM-P188949 | Oil Pressure Pump Performance. System Internal Failures. Internal electronic failure (B6324S5, TF-80SC AWD) |
| DEM-P188949 | Oil Pressure Pump Performance. System Internal Failures. Internal electronic failure (B8444S, TF-80SC AWD) |
| DEM-P18897A | Oil Pressure Pump Performance. Mechanical Failures. Fluid leak or seal failure (B6324S5, TF-80SC AWD) |
| DEM-P18897A | Oil Pressure Pump Performance. Mechanical Failures. Fluid leak or seal failure (B8444S, TF-80SC AWD) |
| DEM-P188A68 | Differential Oil Temperature Too High/Too Low. Algorithm Based Failures. Event information (B6324S5, TF-80SC AWD) |
| DEM-P188A68 | Differential Oil Temperature Too High/Too Low. Algorithm Based Failures. Event information (B8444S, TF-80SC AWD) |
| DEM-U000100 | High Speed CAN Communication Bus. General Failure Information. No sub type information (B6324S5, TF-80SC AWD) |
| DEM-U000100 | High Speed CAN Communication Bus. General Failure Information. No sub type information (B8444S, TF-80SC AWD) |
| DEM-U010000 | Lost Communication With Engine control module. General Failure Information. No sub type information (B6324S5, TF-80SC AWD) |
| DEM-U010000 | Lost Communication With Engine control module. General Failure Information. No sub type information (B8444S, TF-80SC AWD) |
| DEM-U012900 | Lost Communication With Brake System Control Module. General Failure Information. No sub type information (B6324S5, TF-80SC AWD) |
| DEM-U012900 | Lost Communication With Brake System Control Module. General Failure Information. No sub type information (B8444S, TF-80SC AWD) |
| DEM-U014000 | Lost Communication With Central electronic module. General Failure Information. No sub type information (B6324S5, TF-80SC AWD) |
| DEM-U014000 | Lost Communication With Central electronic module. General Failure Information. No sub type information (B8444S, TF-80SC AWD) |
| DEM-U030000 | Internal Control Module Software Incompatibility. General Failure Information. No sub type information (B6324S5, TF-80SC AWD) |
| DEM-U030000 | Internal Control Module Software Incompatibility. General Failure Information. No sub type information (B8444S, TF-80SC AWD) |
| DEM-U030046 | Internal Control Module Software Incompatibility. System Internal Failures. Calibration/parameter memory failure (B6324S5, TF-80SC AWD) |
| DEM-U030046 | Internal Control Module Software Incompatibility. System Internal Failures. Calibration/parameter memory failure (B8444S, TF-80SC AWD) |
| DEM-U03004A | Internal Control Module Software Incompatibility. System Internal Failures. Incorrect component installed (B6324S5, TF-80SC AWD) |
| DEM-U03004A | Internal Control Module Software Incompatibility. System Internal Failures. Incorrect component installed (B8444S, TF-80SC AWD) |
| DEM-U030054 | Internal Control Module Software Incompatibility. System Programming Failures. Missing calibration (B6324S5, TF-80SC AWD) |
| DEM-U030054 | Internal Control Module Software Incompatibility. System Programming Failures. Missing calibration (B8444S, TF-80SC AWD) |
| DEM-U300362 | Battery Voltage. Algorithm Based Failures. Signal compare failure (B6324S5, TF-80SC AWD) |
| DEM-U300362 | Battery Voltage. Algorithm Based Failures. Signal compare failure (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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