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.
2017 Ford GTFACTORY OEM SERVICE PROCEDURE
Module Communications Network System DTCS: IPC
| DTC | Description | Action |
|---|---|---|
| U0029:00 | Vehicle Communication Bus "A" Performance: No Sub Type Information | The module could not communicate with the network at a point in time. The fault is not currently present since the module had to communicate with the diagnostic scan tool to report the DTC. VERIFY integrity of the connectors and wiring. Refer to Module Communications Network for schematic and connector information. If a communication concern is still present, GO to Pinpoint Test X |
| U0030:13 | Vehicle Communication Bus "A" (+) Open: Circuit Open | This DTC sets in the IPC when an open or short to voltage on the HS-CAN3 (+) circuit is detected. GO to Pinpoint Test X |
| U0031:11 | Vehicle Communication Bus "A" (+) Low: Circuit Short to Ground | This DTC sets in the IPC when a short ground on the HS-CAN3 (+) circuit is detected. GO to Pinpoint Test X |
| U0032:12 | Vehicle Communication Bus "A" (+) High: Circuit Short to Battery | This DTC sets in the IPC when a short to battery on the HS-CAN3 (+) circuit is detected. GO to Pinpoint Test X |
| U0033:13 | Vehicle Communication Bus "A" (-) Open: Circuit Open | This DTC sets in the IPC when an open or a short to voltage on the HS-CAN3 (-) circuit is detected. GO to Pinpoint Test X |
| U0034:11 | Vehicle Communication Bus "A" (-) Low: Circuit Short To Ground | This DTC sets in the IPC when a short to ground on the HS-CAN3 (-) circuit is detected. GO to Pinpoint Test X |
| U0035:12 | Vehicle Communication Bus "A" (-) High: Circuit Short to Battery | This DTC sets in the IPC when a short to battery on the HS-CAN3 (-) circuit is detected. GO to Pinpoint Test X |
| U0073:00 | Vehicle Communication Bus "A" Off: No Sub Type Information | The module could not communicate with the network at a point in time. The fault is not currently present since the module had to communicate with the diagnostic scan tool to report the DTC. VERIFY integrity of the connectors and wiring. Refer to Module Communications Network for schematic and connector information. If a communication concern is still present, GO to Pinpoint Test X |
Factory Service Tools
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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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