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.
DEM Diagnostic Trouble Code (DTC) Index
2005 Ford Taurus SEL, 4D SedanSECTION DEM Diagnostic Trouble Code (DTC) Index
WARNING: This page is about a different car, the 2005 Mercury Montego, 2005 Ford Freestyle, and 2005 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.
DEM Diagnostic Trouble Code (DTC) Index
DEM DIAGNOSTIC TROUBLE CODE (DTC) INDEX
| DTC | Description | Source | Action |
|---|---|---|---|
| P0562 | System Voltage Low | DEM | REFER to CHARGING SYSTEM - GENERAL INFORMATION . |
| P0563 | System Voltage High | DEM | REFER to CHARGING SYSTEM - GENERAL INFORMATION . |
| P0602 | Powertrain Control Module Programming Error | DEM | CLEAR DTCs. REPEAT the self-test. If DTC P0602 is retrieved, INSTALL a new DEM. REFER to REAR DRIVE AXLE/DIFFERENTIAL . CLEAR the DTCs. REPEAT the self-test. |
| P0606 | ECU Short to Ground or Open Circuit | DEM | CLEAR DTCs. REPEAT the self-test. If DTC P0606 is retrieved, INSTALL a new DEM. REFER to REAR DRIVE AXLE/DIFFERENTIAL . CLEAR the DTCs. REPEAT the self-test. |
| P0932 | Hydraulic Pressure Sensor Circuit | DEM | INSTALL a new Rear Axle Oil Temperature Sensor. REFER to REAR DRIVE AXLE/DIFFERENTIAL . CLEAR the DTC. REPEAT the self-test. |
| P0937 | Hydraulic Oil Temperature Sensor Circuit | DEM | INSTALL a new Rear Axle Oil Temperature Sensor. REFER to REAR DRIVE AXLE/DIFFERENTIAL . CLEAR the DTC. REPEAT the self-test. |
| P0939 | Hydraulic Oil Temperature Sensor Circuit Low Input | DEM | INSTALL a new Rear Axle Oil Temperature Sensor. REFER to REAR DRIVE AXLE/DIFFERENTIAL . CLEAR the DTC. REPEAT the self-test. |
| P0940 | Hydraulic Oil Temperature Sensor Circuit High Input | DEM | INSTALL a new Rear Axle Oil Temperature Sensor. REFER to REAR DRIVE AXLE/DIFFERENTIAL . CLEAR the DTC. REPEAT the self-test. |
| P0960 | Pressure Control Solenoid A Control Circuit Open | DEM | CHECK for damaged rear half-shafts, inner or outer CV joints. MONITOR the ABS wheel speed sensor PIDS to verify that the ABS module is transmitting the correct wheel speeds to the DEM. CHECK for fluid leaks in the active on-demand coupler. REPAIR as necessary. REFER to REAR DRIVE AXLE/DIFFERENTIAL . If no faults are found, INSTALL a new DEM. REFER to REAR DRIVE AXLE/DIFFERENTIAL . CLEAR the DTCs. REPEAT the self-test. |
| P0961 | Pressure Control Solenoid A Control Circuit Range Performance | DEM | CHECK for damaged rear half-shafts, inner or outer CV joints. MONITOR the ABS wheel speed sensor PIDS to verify that the ABS module is transmitting the correct wheel speeds to the DEM. CHECK for fluid leaks in the active on-demand coupler. REPAIR as necessary. REFER to REAR DRIVE AXLE/DIFFERENTIAL . If no faults are found, INSTALL a new DEM. REFER to REAR DRIVE AXLE/DIFFERENTIAL . CLEAR the DTCs. REPEAT the self-test. |
| P0962 | Pressure Control Solenoid A Control Circuit Low | DEM | CHECK for damaged rear half-shafts, inner or outer CV joints. MONITOR the ABS wheel speed sensor PIDS to verify that the ABS module is transmitting the correct wheel speeds to the DEM. CHECK for fluid leaks in the active on-demand coupler. REPAIR as necessary. REFER to REAR DRIVE AXLE/DIFFERENTIAL . If no faults are found, INSTALL a new DEM. REFER to REAR DRIVE AXLE/DIFFERENTIAL . CLEAR the DTCs. REPEAT the self-test. |
| P1889 | Oil Pressure Pump Performance | DEM | INSTALL a new Active On-Demand Coupling Oil Pump. REFER to REAR DRIVE AXLE/DIFFERENTIAL . CLEAR the DTC. REPEAT the self-test. If DTC P1889 is still present, INSTALL the DEM kit (4C016) including all of the parts. REFER to REAR DRIVE AXLE/DIFFERENTIAL . CLEAR the DTCs. REPEAT the self test. |
| U0001 | High Speed CAN Communication Bus | DEM | REFER to MODULE COMMUNICATIONS NETWORK . |
| U0121 | Lost Communication With Anti-Lock Brake System (ABS) Control Module (One or More Wheel Speeds Missing) | DEM | REFER to MODULE COMMUNICATIONS NETWORK . |
| U2050 | No Valid Application Added | DEM | RECONFIGURE the DEM using As-Built Data. |
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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.