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 MANUALSFORD2005PICKUP F250 SUPER DUTY, 2D PICKUP, 5.4 5, 4WD, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROLS - POWERTRAIN DTC CHARTS & DESCRIPTION (EXCEPT DIESEL & HYBRID)DIAGNOSTIC TROUBLE CODE (DTC) CHARTS AND DESCRIPTIONSDTC U0101 - LOST COMMUNICATION WITH TRANSAXLE CONTROL MODULE (TCM)
2005 Ford Pickup F250 Super Duty, 2D Pickup, 5.4 5, 4WD, Automatic
DTC U0101 - Lost Communication With Transaxle Control Module (TCM)
2005 Ford Pickup F250 Super Duty, 2D Pickup, 5.4 5, 4WD, AutomaticSECTION DTC U0101 - Lost Communication With Transaxle Control Module (TCM)
U0101 - Lost Communication With Transaxle Control Module (TCM)
| Description: | - | ||
| Possible Causes: | Network DTC(s) occur during module to module communication failures. Two types of network faults can be categorized: Invalid data network faults - data is transferred within the normal inter-module message, but contains known invalid data. The transmitting module logs a DTC related to the invalid data fault. Missing message network faults - missing message faults are logged by module upon failure to receive a message from another module within a defined retry period. |
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| Diagnostic Aids: | Carry out the on-board diagnostics for the associated network module. For additional information concerning the description and operation of the vehicle communication network, refer to the Module Communications Network article. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | - | ||
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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.