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 (PCM) | CHECK the battery and charging system for faults. REFER to CHARGING SYSTEM - GENERAL INFORMATION article. CLEAR the DTC. REPEAT the self-test. |
| B1318 | Battery Voltage Low | 4WD Control Module | CHECK the battery and charging system for faults. REFER to CHARGING SYSTEM - GENERAL INFORMATION article. CLEAR the DTC. REPEAT the self-test. |
| B1342 | ECU is Defective | 4WD Control Module | CLEAR the DTC. REPEAT the self-test. If DTC B1342 is retrieved, INSTALL a 4WD control module (integral to the PCM). REFER to ELECTRONIC ENGINE CONTROLS article. REPEAT the self-test. |
| C1728 | Transfer Case Unable to Transition Between 2WD HIGH and 4WD HIGH | 4WD Control Module | Go to Pinpoint Test L . |
| C1729 | Transfer Case Unable to Transition Between 4WD HIGH and 4WD LOW | 4WD Control Module | Go to Pinpoint Test M . |
| C1979 | IWE Solenoid Circuit Failure | 4WD Control Module | Go to Pinpoint Test K . |
| C1980 | IWE Solenoid Circuit Short to Battery | 4WD Control Module | Go to Pinpoint Test K . |
| P1812 | Transmission 4-Wheel Drive Mode Select Circuit Failure | 4WD Control Module | Go to Pinpoint Test L . |
| P1815 | Transmission 4-Wheel Drive Mode Select Short Circuit to Ground | 4WD Control Module | Go to Pinpoint Test L . |
| P1820 | Transfer Case Clockwise Shift Relay Coil Circuit Failure | 4WD Control Module | Go to Pinpoint Test L . |
| P1822 | Transfer Case Clockwise Shift Relay Coil Short Circuit To Battery | 4WD Control Module | Go to Pinpoint Test L . |
| P1824 | Transmission 4-Wheel Drive Clutch Relay Circuit Failure | 4WD Control Module | Go to Pinpoint Test N . |
| P1826 | Transmission 4-Wheel Drive Low Clutch Relay Short Circuit to Battery | 4WD Control Module | Go to Pinpoint Test N . |
| P1827 | Transmission 4-Wheel Drive Low Clutch Relay Short Circuit to Ground | 4WD Control Module | Go to Pinpoint Test N . |
| P1828 | Transfer Case Counterclockwise Shift Relay Coil Circuit Failure | 4WD Control Module | Go to Pinpoint Test L . |
| P1830 | Transfer Case Counterclockwise Shift Relay Coil Short Circuit To Battery | 4WD Control Module | Go to Pinpoint Test L . |
| P1849 | Transmission Transfer Case Contact Plate A Short Circuit to Ground | 4WD Control Module | Go to Pinpoint Test L . |
| P1853 | Transmission Transfer Case Contact Plate B Short Circuit to Ground | 4WD Control Module | Go to Pinpoint Test L . |
| P1857 | Transmission Transfer Case Contact Plate C Short Circuit to Ground | 4WD Control Module | Go to Pinpoint Test L . |
| P1861 | Transmission Transfer Case Contact Plate D Short Circuit to Ground | 4WD Control Module | Go to Pinpoint Test L . |
| P1867 | Transmission Transfer Case Contact Plate General Circuit Failure | 4WD Control Module | Go to Pinpoint Test L . |
| P1891 | Transmission Transfer Case Contact Plate Ground Return Open Circuit | 4WD Control Module | Go to Pinpoint Test L . |
| U1900 | CAN Communication BUS Fault - Received Error | 4WD Control Module | DIAGNOSE the module communication network. REFER to MODULE COMMUNICATIONS NETWORK article. |
| U2023 | Fault Received From External Node | 4WD Control Module | DIAGNOSE the module communication network. REFER to MODULE COMMUNICATIONS NETWORK article. |
| U2051 | One Or More Calibration Files Missing/Corrupt | 4WD Control Module | Method 3 programming fault. REFER to MODULE COMMUNICATIONS NETWORK article for 4WD control module (PCM) programming information. |