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 Ford Explorer Base, FWD, 6F55FACTORY OEM SERVICE PROCEDURE
All Terrain Control Module (ATCM)
ALL TERRAIN CONTROL MODULE (ATCM) DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Action |
|---|---|---|
| B11D9:16 | Vehicle Battery: Circuit Voltage Below Threshold | REFER to Diagnostic Routine F . |
| B11D9:17 | Vehicle Battery: Circuit Voltage Above Threshold | REFER to Diagnostic Routine F . |
| B13FC:67 | Brake Manager (ABS) All Terrain System State: Signal Incorrect After Event | This Diagnostic Trouble Code (DTC) sets when the Anti-Lock Brake System (ABS) module is not following the mode request from the All Terrain Control Module (ATCM). RETRIEVE and REPAIR all non-network Diagnostic Trouble Codes (DTCs) in the Anti-Lock Brake System (ABS) module. REFER to DTC CHART: ANTI-LOCK BRAKE SYSTEM (ABS) MODULE for diagnosis of all Diagnostic Trouble Codes (DTCs). |
| B1402:67 | Torque Manager (ECM/PCM) All Terrain System State: Signal Incorrect After Event | This Diagnostic Trouble Code (DTC) sets when the Powertrain Control Module (PCM) is not following the mode request from the All Terrain Control Module (ATCM). RETRIEVE and REPAIR all non-network Diagnostic Trouble Codes (DTCs) in the Powertrain Control Module (PCM). REFER to DTC CHART: POWERTRAIN CONTROL MODULE (PCM) for diagnosis of all Diagnostic Trouble Codes (DTCs). |
| B1403:67 | Ratio Manager (PCM/TCM) All Terrain System State: Signal Incorrect After Event | This Diagnostic Trouble Code (DTC) sets when the Powertrain Control Module (PCM) is not following the mode request from the All Terrain Control Module (ATCM). RETRIEVE and REPAIR all non-network Diagnostic Trouble Codes (DTCs) in the Powertrain Control Module (PCM). REFER to DTC CHART: POWERTRAIN CONTROL MODULE (PCM) for diagnosis of all Diagnostic Trouble Codes (DTCs). |
| B142F:67 | Wheel Change Manager (TCCM/PCM/ECM) All Terrain System State: Signal Incorrect After Event | This Diagnostic Trouble Code (DTC) sets when the Powertrain Control Module (PCM) is not following the mode request from the All Terrain Control Module (ATCM). RETRIEVE and REPAIR all non-network Diagnostic Trouble Codes (DTCs) in the Powertrain Control Module (PCM). REFER to DTC CHART: POWERTRAIN CONTROL MODULE (PCM) for diagnosis of all Diagnostic Trouble Codes (DTCs). |
| U0100:00 | Lost Communication With ECM/PCM "A": No Sub Type Information | REFER to Diagnostic Routine G . |
| U0121:00 | Lost Communication With Anti-Lock Brake System (ABS) Control Module: No Sub Type Information | REFER to Diagnostic Routine K . |
| U0140:00 | Lost Communication With Body Control Module: No Sub Type Information | REFER to Diagnostic Routine J . |
| U0401:00 | Invalid Data Received from ECM/PCM A: No Sub Type Information | This Diagnostic Trouble Code (DTC) sets when the All Terrain Control Module (ATCM) receives invalid data from the Powertrain Control Module (PCM). RETRIEVE and REPAIR all non-network Diagnostic Trouble Codes (DTCs) in the Powertrain Control Module (PCM) and other modules on the network. REFER to DTC CHART: POWERTRAIN CONTROL MODULE (PCM) for diagnosis of all Diagnostic Trouble Codes (DTCs). |
| U0415:00 | Invalid Data Received From Anti-Lock Brake System (ABS) Control Module: No Sub Type Information | This Diagnostic Trouble Code (DTC) sets when the All Terrain Control Module (ATCM) receives invalid data from the Anti-Lock Brake System (ABS). RETRIEVE and REPAIR all non-network Diagnostic Trouble Codes (DTCs) in the Anti-Lock Brake System (ABS) and other modules on the network. REFER to DTC CHART: ANTI-LOCK BRAKE SYSTEM (ABS) MODULE for diagnosis of all Diagnostic Trouble Codes (DTCs). |
| U0422:00 | Invalid Data Received From Body Control Module: No Sub Type Information | This Diagnostic Trouble Code (DTC) sets when the All Terrain Control Module (ATCM) receives invalid data from the Body Control Module (BCM). RETRIEVE and REPAIR all non-network Diagnostic Trouble Codes (DTCs) in the Body Control Module (BCM) and other modules on the network. REFER to DTC CHART: BODY CONTROL MODULE (BCM) for diagnosis of all Diagnostic Trouble Codes (DTCs). |
| U3000:49 | Control Module: Internal Electronic Failure | This Diagnostic Trouble Code (DTC) sets when the All Terrain Control Module (ATCM) switch is between detents. ROTATE the knob to the next detent, CYCLE the ignition RUN/OFF/RUN. ROTATE through all 4 Terrain Modes, staying in each mode for at least 1 minute. CLEAR Diagnostic Trouble Codes (DTCs) and CARRY OUT All Terrain Control Module (ATCM) Self-Test. If Diagnostic Trouble Code (DTC) U3000:49 returns, INSTALL a new All Terrain Control Module (ATCM). REFER to All Terrain Control Module (ATCM) . |
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.