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.
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HOMESERVICE MANUALSFORD2014TAURUS LIMITED, 2.0L ENG VIN 9REPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSDTC INDEXINFORMATION SYSTEM AND ENTERTAINMENT SYSTEM (4.2 INCH DISPLAY) DTCSACCESSORY PROTOCOL INTERFACE MODULE (APIM)
2014 Ford Taurus Limited, 2.0L Eng VIN 9
Accessory Protocol Interface Module (APIM)
2014 Ford Taurus Limited, 2.0L Eng VIN 9SECTION Accessory Protocol Interface Module (APIM)
DTC INDEX
| DTC | Description | Action |
|---|---|---|
| B1252:04 | USB Port: System Internal Failure | GO to PINPOINT TEST V . |
| B1252:11 | USB Port: Circuit Short to Ground | GO to PINPOINT TEST V . |
| B12B8:04 | USB # 2 Port: 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. REPEAT the self-test. If DTC B12B8:04 is retrieved again,
Click here to access APIM HARDWARE TESTING
. |
| B12B8:11 | USB # 2 Port: Circuit 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.REPEAT the self-test. If DTC B12B8:11 is retrieved again, I
Click here to access APIM HARDWARE TESTING
. |
| B1D79:01 | Microphone Input: General Electrical Failure | GO to PINPOINT TEST T . |
| B1D79:11 | Microphone Input: Circuit Short to Ground | GO to PINPOINT TEST T . |
| B1D79:12 | Microphone Input: Circuit Short to Battery | GO to PINPOINT TEST T . |
| B1D79:13 | Microphone Input: Circuit Open | GO to PINPOINT TEST T . |
| U0140:00 | Lost Communication With Body Control Module: No Sub Type Information | GO to PINPOINT TEST Y . |
| U0155:00 | Lost Communication With Instrument Panel Cluster (IPC) Control Module: No Sub Type Information | GO to PINPOINT TEST Z . |
| U0257:00 | Lost Communication With Front Controls/Display Interface Module: No Sub Type Information | GO to PINPOINT TEST AE . |
| U0423:00 | Invalid Data Received From Instrument Panel Control Module: No Sub Type Information | REFER to INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES to retrieve and follow DTCs present in the IPC. |
| U2100:00 | Initial Configuration Not Complete: No Sub Type Information | CHECK vehicle service history for recent service actions related to this module. This DTC sets due to incomplete or incorrect PMI procedures. If there have been recent service actions with this module, REPEAT/PERFORM the APIM programming as directed by the scan tool. REFER to ACCESSORY PROTOCOL INTERFACE MODULE (APIM) PROGRAMMING . If there have been no recent service actions, Click here to access APIM HARDWARE TESTING . |
| U2101:00 | Initial Configuration Not Complete: No Sub Type Information | CHECK vehicle service history for recent service actions related to this module. This DTC sets due to incomplete or incorrect PMI procedures. If there have been recent service actions with this module, REPEAT/PERFORM the APIM programming as directed by the scan tool. REFER to ACCESSORY PROTOCOL INTERFACE MODULE (APIM) PROGRAMMING . If there have been no recent service actions, Click here to access APIM HARDWARE TESTING . |
| U3000:04 | Control Module: System Internal Failure | GO to PINPOINT TEST S . |
| U3000:41 | Control Module: General Checksum Failure | CLEAR the DTCs. REPEAT the self-test. If DTC U3000:41 is still present, Click here to access APIM HARDWARE TESTING . |
| U3000:42 | Control Module: General Memory Failure | CLEAR the DTCs. REPEAT the self-test. If DTC U3000:42 is still present, Click here to access APIM HARDWARE TESTING . |
| U3000:88 | Control Module: Bus Off |
NOTE:
Network communication/message DTCs may result from intermittent concerns such as damaged wiring or low battery voltage occurrences. Additionally, vehicle repair procedures such as module reprogramming often set these DTCs. To avoid repeat network concerns, INSPECT for damaged or corroded wiring at the APIM. Test the vehicle battery. Refer to Charging Systems in
CHARGING SYSTEM
. Replacing a module to resolve a network DTC is unlikely to resolve the concern. The module could not communicate on the network at a point in time. The fault is currently not present. CLEAR the DTC. REPEAT the network test with the scan tool. |
| U3003:16 | Battery Voltage: Circuit Voltage Below Threshold | GO to PINPOINT TEST AF . |
| U3003:17 | Battery Voltage: Circuit Voltage Above Threshold | GO to PINPOINT TEST AG . |
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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.