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.
Controller Area Network (Can) Module Communications Network
Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods .
| DTC | Description | Action |
|---|---|---|
| U0001:09 | High Speed CAN Communication Bus: Component Failure | GO to Pinpoint Test AJ |
| U1A01:00 | Communication Link: No Sub Type Information | GO to Pinpoint Test AK |
| U2100:00 | Initial Configuration Not Complete: No Sub Type Information | GO to Pinpoint Test AL |
| U2200:00 | Control Module Configuration Memory Corrupt: No Sub Type Information | GO to Pinpoint Test AL |
| U3000:04 | Control Module: System Internal Failure | GO to Pinpoint Test AM |
| U3000:43 | Control Module: Special Memory Failure | GO to Pinpoint Test AM |
| U3000:49 | Control Module: Internal Electronic Failure | GO to Pinpoint Test AM |
| U3000:57 | Control Module: Invalid / Incompatible Software Component | GO to Pinpoint Test AN |
| U3003:16 | Battery Voltage: Circuit Voltage Below Threshold | GO to Pinpoint Test AO |
| U3003:17 | Battery Voltage: Circuit Voltage Above Threshold | GO to Pinpoint Test AP |
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
No obligation. See pricing before you book.