2009 Ford Flex SEFACTORY OEM SERVICE PROCEDURE

Accessory Protocol Interface Module (APIM) - V2 DTC Chart

DIAGNOSTIC TROUBLE CODE (DTC) LIST

DTC Description Action
B1201:63 Steering Wheel Audio Switch Pack 2: Circuit/Component Protection Time-Out Go To PINPOINT TEST M .
B1201:1C Steering Wheel Audio Switch Pack 2: Circuit Voltage Out of Range Go To PINPOINT TEST M .
B1252:04 USB  Port: System Internal Failure Go To PINPOINT TEST Z .
B1252:11 USB  Port: Circuit Short to Ground Go To PINPOINT TEST Z .
B1D79:01 Microphone Input: General Electrical Failure Go To PINPOINT TEST Q .
U0100:00 Lost Communication With ECM/PCM: No Sub Type Information Go To PINPOINT TEST AV .
U0140:00 Lost Communication With Body Control Module: No Sub Type Information Go To PINPOINT TEST AE .
U0151:00 Lost Communication With Restraints Control Module: No Sub Type Information Go To PINPOINT TEST AW .
U0155:00 Lost Communication With Instrument Panel Cluster (IPC  ) Control Module: No Sub Type Information Go To PINPOINT TEST AS .
U0184:00 Lost Communication With Radio: No Sub Type Information Go To PINPOINT TEST AT .
U0255:00 Lost Communication With Front Display Interface Module: No Sub Type Information Go To PINPOINT TEST F .
U0256:00 Lost Communication With Front Controls Interface Module: No Sub Type Information Go To PINPOINT TEST H .
U0422:00 Invalid Data Received From Body Control Module: No Sub Type Information RETRIEVE and FOLLOW other DTCs present in the Accessory Protocol Interface Module (APIM) or Smart Junction Box (SJB).
U0423:00 Invalid Data Received From Instrument Panel Control Module: No Sub Type Information RETRIEVE and FOLLOW other DTCs present in the APIM  or Instrument Cluster (IC).
U0485:00 Invalid Data Received From Radio: No Sub Type Information RETRIEVE and FOLLOW other DTCs present in the APIM  or Audio Control Module (ACM).
U2100:00 Initial Configuration Not Complete: No Sub Type Information REFER to MODULE CONFIGURATION .
U2101:00 Control Module Configuration Incompatible: No Sub Type Information REFER to MODULE CONFIGURATION .
U3000:04 Control Module: System Internal Failure CLEAR the DTCs. REPEAT the self-test. If DTC U3000:04 is still present, INSTALL a new APIM  . REFER to ACCESSORY PROTOCOL INTERFACE MODULE (APIM) . REPEAT the self-test.
U3000:41 Control Module: General Checksum Failure CLEAR the DTCs. REPEAT the self-test. If DTC U3000:41 is still present, INSTALL a new APIM  . REFER to ACCESSORY PROTOCOL INTERFACE MODULE (APIM) . REPEAT the self-test.
U3000:42 Control Module: General Memory Failure CLEAR the DTCs. REPEAT the self-test. If DTC U3000:42 is still present, INSTALL a new APIM  . REFER to ACCESSORY PROTOCOL INTERFACE MODULE (APIM) . REPEAT the self-test.
U3000:88 Control Module: Bus Off REFER to MODULE COMMUNICATIONS NETWORK .
U3003:16 Battery Voltage: Circuit Voltage Below Threshold Go To PINPOINT TEST AL .
U3003:17 Battery Voltage: Circuit Voltage Above Threshold Go To PINPOINT TEST AK .
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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.