Four Wheel Drive (4WD) Control Module (PCM) Diagnostic Trouble Code (DTC) Chart
WARNING: This page is about a different car, the 2007 Lincoln Mark LT and 2007 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
| DTC | Description | Source | Action |
|---|---|---|---|
| B1317 | Battery Voltage High | Four Wheel Drive (4WD) Control Module | CHECK the battery and charging system. REFER to CHARGING SYSTEM - GENERAL INFORMATION article. |
| B1318 | Battery Voltage Low | 4WD Control Module | CHECK the battery and charging system. REFER to CHARGING SYSTEM - GENERAL INFORMATION article. |
| B1342 | ECU Is Defective | 4WD Control Module | CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved, INSTALL a new 4WD control module (integral to the PCM). REFER to ELECTRONIC ENGINE CONTROLS article. REPEAT the self-test. |
| C1979 | Integrated Wheel Ends (IWE) Solenoid Circuit Failure | 4WD Control Module | Go to Pinpoint Test B . |
| C1980 | IWE Solenoid Circuit Short to Battery | 4WD Control Module | Go to Pinpoint Test B . |
| P1824 | 4-Wheel Drive Clutch Relay Circuit Failure | 4WD Control Module | Go to Pinpoint Test E . |
| P1826 | 4-Wheel Drive Low Clutch Relay Short Circuit to Battery | 4WD Control Module | Go to Pinpoint Test E . |
| P1827 | 4-Wheel Drive Low Clutch Relay Short Circuit to Ground | 4WD Control Module | Go to Pinpoint Test E . |
| U1900 | CAN Communication Bus Fault - Receive Error | 4WD Control Module | Missing CAN network message. REFER to MODULE COMMUNICATIONS NETWORK article. |
| U2023 | Fault Received From External Node | 4WD Control Module | Invalid/faulted CAN wheel speed message data. REFER to MODULE COMMUNICATIONS NETWORK article. |
| U2051 | One or More Calibration Files Missing/Corrupt | 4WD Control Module | This DTC is cleared when reprogramming. REFLASH the 4WD control module (PCM) after the vehicle as-built data is successfully uploaded; this DTC cannot be cleared by the scan tool. |