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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 MANUALSFORD2009PICKUP F350 SUPER DUTY, 2D PICKUP, 6.8 Y, 4WD, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)GENERAL INFORMATIONDTC INDEXDTC INDEX -- F250-F550 SUPER DUTYMODULE COMMUNICATIONS NETWORK DTCS
2009 Ford Pickup F350 Super Duty, 2D Pickup, 6.8 Y, 4WD, Standard
Module Communications Network DTCS
2009 Ford Pickup F350 Super Duty, 2D Pickup, 6.8 Y, 4WD, StandardSECTION Module Communications Network DTCS
COMMUNICATION NETWORK DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Source | Perform Test |
|---|---|---|---|
| U0073 (Refer to the Note at the beginning of the DTC LIST.) | Control Module Communication Bus A Off | ABS module | DTC U0073 indicates the module could not communicate on the network at a point in time. The fault is currently not present. CLEAR the DTCs. REPEAT the network test with the scan tool. |
| U00731 | Control Module Communication Bus A Off | HVAC module | DTC U0073 indicates the module could not communicate on the network at a point in time. The fault is currently not present. CLEAR the DTCs. REPEAT the network test with the scan tool. |
| U00731 | Control Module Communication Bus A Off | Instrument cluster (IC) | DTC U0073 indicates the module could not communicate on the network at a point in time. The fault is currently not present. CLEAR the DTCs. REPEAT the network test with the scan tool. |
| U00741 | Control Module Communication Bus B Off | IC | DTC U0074 indicates the module could not communicate on the network at a point in time. The fault is currently not present. CLEAR the DTCs. REPEAT the network test with the scan tool. |
| U01001 | Lost Communication with ECM/PCM | IC | CLEAR the DTCs. REPEAT the network test with the scan tool. If the DTC returns, go to Pinpoint Test A . |
| U01001 | Lost Communication with ECM/PCM | Restraints control module (RCM) | CLEAR the DTCs. REPEAT the network test with the scan tool. If the DTC returns, go to Pinpoint Test A . |
| U01001 | Lost Communication with ECM/PCM | Auxiliary heater control module (AHCM) | CLEAR the DTCs. REPEAT the network test with the scan tool. If the DTC returns, go to Pinpoint Test A . |
| U01001 | Lost Communication with ECM/PCM | Transmission control module (TCM) | CLEAR the DTCs. REPEAT the network test with the scan tool. If the DTC returns, go to Pinpoint Test A . |
| U01011 | Lost Communication with TCM | IC | CLEAR the DTCs. REPEAT the network test with the scan tool. If the DTC returns, go to Pinpoint Test g . |
| U01151 | Lost Communication With ECM/PCM | ABS module | Run a network test and if no symptoms are present, DISREGARD this DTC. |
| U01151 | Lost Communication With ECM/PCM | Trailer brake control (TBC) module | Run a network test and if no symptoms are present, DISREGARD this DTC. |
| U01211 | Lost Communication With Anti-Lock Brake System (ABS) Control Module | IC | Go to Pinpoint Test B . |
| U01211 | Lost Communication With Anti-Lock Brake System (ABS) Control Module | TBC module | Go to Pinpoint Test B . |
| U01371 | Lost Communication With Trailer Brake Control Module | IC | Go to Pinpoint Test D . |
| U01401 | Lost Communication with Body Control Module (GEM) | Audio control module (ACM) | Go to Pinpoint Test H . |
| U01401 | Lost Communication with Body Control Module (GEM) | Driver seat module (DSM) | Go to Pinpoint Test H . |
| U01401 | Lost Communication with Body Control Module (GEM) | IC | Go to Pinpoint Test H . |
| U01401 | Lost Communication with Body Control Module (GEM) | Rear entertainment module (RETM) | Go to Pinpoint Test H . |
| U01541 | Lost Communication with Occupant Classification System Module | ACM | DISREGARD this DTC. |
| U01551 | Lost Communication with Instrument Panel Cluster (IC) Control Module | ABS module | Go to Pinpoint Test C . |
| U01551 | Lost Communication with Instrument Panel Cluster (IC) Control Module | ACM | Go to Pinpoint Test C . |
| U01551 | Lost Communication with Instrument Panel Cluster (IC) Control Module | Driver seat module | Go to Pinpoint Test C . |
| U01551 | Lost Communication with Instrument Panel Cluster (IC) Control Module | Smart junction box (SJB) | Go to Pinpoint Test C . |
| U01551 | Lost Communication with Instrument Panel Cluster (IC) Control Module | AHCM | Go to Pinpoint Test C . |
| U01551 | Lost Communication with Instrument Panel Cluster (IC) Control Module | TBC module | Go to Pinpoint Test C . |
| U01551 | Lost Communication with Instrument Panel Cluster (IC) Control Module | Transmission control module (TCM) | Go to Pinpoint Test C . |
| U01591 | Lost Communication with Parking Assist Control Module (PAM) | ACM | DISREGARD this DTC. |
| U01641 | Lost Communication with Electronic Automatic Temperature Control Module | IC | Go to Pinpoint Test J . |
| U01661 | Lost Communication with Auxiliary Heater Control Module | IC | Go to Pinpoint Test F . |
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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.