Transfer Case Control Module (TCCM) DTC Chart
WARNING: This page is about a different car, the 2014 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
This module utilizes a 5-character DTC followed by a 2-character failure type code. The failure type code provides information about specific fault conditions such as opens or shorts to ground. Continuous Memory Diagnostic Trouble Codes (CMDTCs) have an additional 2-character DTC status code suffix to assist in determining DTC history.
| DTC | Description | Action |
|---|---|---|
| C1979:11 | IWE Solenoid Circuit Failure: Circuit Short To Ground | GO to PINPOINT TEST N . |
| C1979:12 | IWE Solenoid Circuit Failure: Circuit Short To Battery | GO to PINPOINT TEST N . |
| C1979:13 | IWE Solenoid Circuit Failure: Circuit Open | GO to PINPOINT TEST N . |
| P0562:00 | System Voltage Low: No Sub Type Information | GO to PINPOINT TEST M . |
| P0563:00 | System Voltage High: No Sub Type Information | GO to PINPOINT TEST M . |
| P1812:00 | 4-Wheel Drive Mode Select Circuit Failure: No Sub Type Information | GO to PINPOINT TEST X . |
| P1815:00 | 4-Wheel Drive Mode Select Short To Ground: No Sub Type Information | GO to PINPOINT TEST X . |
| P1825:00 | 4-Wheel Drive Clutch Relay Open Circuit: No Sub Type Information | GO to PINPOINT TEST Q . |
| P1826:00 | 4-Wheel Drive Low Clutch Relay Circuit To Battery: No Sub Type Information | GO to PINPOINT TEST Q . |
| P1827:00 | 4-Wheel Drive Low Clutch Relay Circuit To Ground: No Sub Type Information | GO to PINPOINT TEST Q . |
| P1839:00 | Transfer Case Shift Motor Open Circuit: No Sub Type Information | GO to PINPOINT TEST P . |
| P1840:00 | Transfer Case Shift Motor Short Circuit To Battery: No Sub Type Information | GO to PINPOINT TEST P . |
| P1841:00 | Transfer Case Shift Motor Short Circuit To Ground: No Sub Type Information | GO to PINPOINT TEST P . |
| P1849:00 | Transfer Case Contact Plate 'A' Short Circuit To Ground: No Sub Type Information | GO to PINPOINT TEST P . |
| P184B:00 | Transfer Case Unable To Transition Between 4H and 4L: No Sub Type Information | GO to PINPOINT TEST P . |
| P1853:00 | Transfer Case Contact Plate 'B' Short Circuit To Ground: No Sub Type Information | GO to PINPOINT TEST P . |
| P1857:00 | Transfer Case Contact Plate 'C' Short Circuit To Ground: No Sub Type Information | GO to PINPOINT TEST P . |
| P185A:00 | Differential Lock-Up Input Switch Circuit High: No Sub Type Information | Go to PINPOINT TEST Y in Electronic Locking Differential (ELD) System, Diagnosis and Testing. |
| P185B:00 | Differential Lock-Up Indicator Circuit Low: No Sub Type Information | Go to PINPOINT TEST Z in Electronic Locking Differential (ELD) System, Diagnosis and Testing. |
| P185C:00 | Differential Lock-Up Indicator Circuit High: No Sub Type Information | Go to PINPOINT TEST AA in Electronic Locking Differential (ELD) System, Diagnosis and Testing. |
| P185D:00 | Differential Lock-Up Control Circuit Performance: No Sub Type Information | Go to PINPOINT TEST AB in Electronic Locking Differential (ELD) System, Diagnosis and Testing. |
| P1861:00 | Transfer Case Contact Plate 'D' Short Circuit To Ground: No Sub Type Information | GO to PINPOINT TEST P . |
| P1867:00 | Transfer Case Contact Plate General Circuit Failure: No Sub Type Information | GO to PINPOINT TEST P . |
| P187C:00 | Differential Lock-Up Control Circuit/Open: No Sub Type Information | Go to PINPOINT TEST AC in Electronic Locking Differential (ELD) System, Diagnosis and Testing. |
| P187D:00 | Differential Lock-Up Control Circuit Low: No Sub Type Information | Go to PINPOINT TEST AC in Electronic Locking Differential (ELD) System, Diagnosis and Testing. |
| P187E:00 | Differential Lock-Up Control Circuit High: No Sub Type Information | Go to PINPOINT TEST AD in Electronic Locking Differential (ELD) System, Diagnosis and Testing. |
| P1886:00 | 4X4 Initialization Failure: No Sub Type Information | CLEAR the DTC. REPEAT the self-test. If the DTC still reports, CONFIRM the TCCM part number is correct for the vehicle. |
| P1891:00 | Transfer Case Contact Plate Ground Return Open Circuit: No Sub Type Information | GO to PINPOINT TEST P . |
| U0100:00 | Lost Communication With ECM/PCM "A": No Sub Type Information | Go to PINPOINT TEST AB in Electronic Locking Differential (ELD) System, Diagnosis and Testing. |
| U0121:00 | Lost Communication With Anti-Lock Brake System (ABS) Control Module: No Sub Type Information | Go to PINPOINT TEST AF in Electronic Locking Differential (ELD) System, Diagnosis and Testing. |
| U0418:00 | Invalid Data Received From Brake System Control Module: No Sub Type Information | REFER to ANTI-LOCK BRAKE SYSTEM (ABS) AND STABILITY CONTROL to diagnose the wheel speed sensor concern. |
| U3000:04 | Control Module: System Internal Failure | CLEAR the DTC. REPEAT the self-test. If DTC U3000:04 is retrieved, INSTALL a new TCCM . REFER to TRANSFER CASE CONTROL MODULE (TCCM) . |
| U3000:41 | Control Module: General Checksum Failure | CLEAR the DTC. REPEAT the self-test. If DTC U3000:41 is retrieved, INSTALL a new TCCM . REFER to TRANSFER CASE CONTROL MODULE (TCCM) . |
| U3000:46 | Control Module: Calibration/Parameter Memory Failure | CLEAR the DTC. REPEAT the self-test. If DTC U3000:46 is retrieved, INSTALL a new TCCM . REFER to TRANSFER CASE CONTROL MODULE (TCCM) . |
| U3000:49 | Control Module: Internal Electronic Failure | CLEAR the DTC. REPEAT the self-test. If DTC U3000:49 is retrieved, INSTALL a new TCCM . REFER to TRANSFER CASE CONTROL MODULE (TCCM) . |
| U300D:11 | Ignition Input On/Start: Circuit Short To Ground | GO to PINPOINT TEST L . |