LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lincoln >> 2017 >> Navigator Select, 4WD >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> Information System And Entertainment System DTCS >> 4.2-Inch (107_mm) Screen, AM/FM/CD/Sync >> Accessory Protocol Interface Module (APIM)
April 5, 2026: LEMON Manuals is launched! Read the announcement.

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 .