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.
Diagnostic Trouble Code (DTC) Chart
Diagnostics in this service information assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods .
| Module | DTC | Description | Action |
|---|---|---|---|
| PACM | B1A01:01 | Speaker #1: General Electrical Failure | GO to Pinpoint Test C |
| PACM | B1A01:11 | Speaker #1: Circuit Short To Ground | GO to Pinpoint Test C |
| PACM | B1A01:12 | Speaker #1: Circuit Short To Battery | GO to Pinpoint Test D |
| PACM | B1A01:13 | Speaker #1: Circuit Open | GO to Pinpoint Test D |
| PACM | U0100:00 | Lost Communication With ECM/PCM "A": No Sub Type Information | GO to Pinpoint Test E |
| PACM | U0140:00 | Lost Communication With Body Control Module: No Sub Type Information | GO to Pinpoint Test F |
| PACM | U0422:00 | Invalid Data Received From Body Control Module: No Sub Type Information | GO to Pinpoint Test G |
| PACM | U201A:51 | Control Module Main Calibration Data: Not Programmed | GO to Pinpoint Test J |
| PACM | U202B:61 | In-Use Application Signing Key: Signal Calculation Failure | GO to Pinpoint Test H |
| PACM | U202B:62 | In-Use Application Signing Key: Signal Compare Failure | GO to Pinpoint Test I |
| PACM | U2101:00 | Control Module Configuration Incompatible: No Sub Type Information | GO to Pinpoint Test J |
| PACM | U3000:41 | Control Module: General Checksum Failure | GO to Pinpoint Test K |
| PACM | U3000:42 | Control Module: General Memory Failure | GO to Pinpoint Test K |
| PACM | U3000:96 | Control Module: Component Internal Failure | GO to Pinpoint Test K |
| PACM | U3003:16 | Battery Voltage: Circuit Voltage Below Threshold | GO to Pinpoint Test L |
| PACM | U3003:17 | Battery Voltage: Circuit Voltage Above Threshold | GO to Pinpoint Test M |
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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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