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.
2017 Ford Expedition SSV, 4WDFACTORY OEM SERVICE PROCEDURE
Accessory Protocol Interface Module (APIM)
| DTC | Description | Action |
|---|---|---|
| B1252:04 | USB Port: System Internal Failure | GO to Pinpoint Test R . |
| B1252:11 | USB Port: Short To Ground | GO to Pinpoint Test R . |
| B12B8:04 | USB Port #2: System Internal Failure |
NOTE:
This DTC refers to USB port #2 on the APIM itself, which is not used. INSPECT the APIM USB port #2 for damage and REMOVE any debris.CLEAR the DTCs.WAIT 10 seconds.REPEAT the self-test.If DTC B12B8:04 is retrieved again, APIM Hardware Testing
. |
| B12B8:11 | USB Port #2: Short To Ground |
NOTE:
This DTC refers to USB port #2 on the APIM itself, which is not used. INSPECT the APIM USB port #2 for damage and REMOVE any debris.CLEAR the DTCs.WAIT 10 seconds.REPEAT the self-test.If DTC B12B8:11 is retrieved again, APIM Hardware Testing
. |
| B1D79:01 | Microphone Input: General Electrical Failure | GO to Pinpoint Test P . |
| B1D79:11 | Microphone Input: Circuit Short To Ground | GO to Pinpoint Test P . |
| B1D79:12 | Microphone Input: Circuit Short To Battery | GO to Pinpoint Test P . |
| B1D79:13 | Microphone Input: Circuit Open | GO to Pinpoint Test P . |
| U0140:00 | Lost Communication With Body Control Module: No Sub Type Information | GO to Pinpoint Test AA . |
| U0155:00 | Lost Communication With Instrument Panel Cluster (IPC): No Sub Type Information | GO to Pinpoint Test AB . |
| U0257:00 | Lost Communication With Front Controls/Display Interface Module: No Sub Type Information | GO to Pinpoint Test AF . |
| U0423:00 | Invalid Data Received From Instrument Panel Control Module: No Sub Type Information | RETRIEVE and FOLLOW non-network DTCs present in the IPC. REFER to Instrumentation, Message Center, and Warning Chimes . If no DTCs are present in the IPC, DIAGNOSE the observable symptom. |
| U2100:00 | Initial Configuration Not Complete: No Sub Type Information | This DTC sets due to incomplete or incorrect APIM programming/provisioning. CHECK vehicle service history for recent service actions related to the APIM. If there have been recent service actions with the APIM, REPEAT/PERFORM the APIM programming as directed by the diagnostic scan tool. REFER to Accessory Protocol Interface Module (APIM) Programming . If there have been no recent service actions, APIM Hardware Testing . |
| U2101:00 | Control Module Configuration Incompatible: No Sub Type Information | This DTC sets due to incomplete or incorrect APIM programming/provisioning. CHECK vehicle service history for recent service actions related to the APIM. If there have been recent service actions with the APIM, REPEAT/PERFORM the APIM programming as directed by the diagnostic scan tool. REFER to Accessory Protocol Interface Module (APIM) Programming . If there have been no recent service actions, APIM Hardware Testing . |
| U3000:04 | Control Module: System Internal Failure | GO to Pinpoint Test M . |
| U3000:41 | Control Module: General Checksum Failure | CLEAR the DTCs. WAIT 10 seconds. REPEAT the self-test. If DTC U3000:41 is retrieved again, APIM Hardware Testing . |
| U3000:42 | Control Module: General Memory Failure | CLEAR the DTCs. WAIT 10 seconds. REPEAT the self-test. If DTC U3000:42 is retrieved again, APIM Hardware Testing . |
| U3000:88 | Control Module: Bus Off | A HS-CAN or I-CAN fault was present at a point in time. The fault is not currently present since the APIM is communicating with the diagnostic scan tool. CLEAR the DTC. REPEAT the network test with the diagnostic scan tool. VERIFY the integrity of the connectors and wiring. Refer to Module Communications Network for schematic and connector information. |
| U3003:16 | Battery Voltage: Circuit Voltage Below Threshold | GO to Pinpoint Test AG . |
| U3003:17 | Battery Voltage: Circuit Voltage Above Threshold | GO to Pinpoint Test AH . |
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.
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