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.
2011 Ford Expedition RWDFACTORY OEM SERVICE PROCEDURE
Module Communication Network DTCS
COMMUNICATION NETWORK DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Source | Action |
|---|---|---|---|
| U0001 | High Speed CAN Communication Bus | ABS module | The module could not communicate on the network at a point in time. The fault is currently not present. CLEAR the DTC. REPEAT the network test with the scan tool. |
| U0073 | Control Module Communication Bus A Off | Vehicle Dynamics Module (VDM) | The module could not communicate on the network at a point in time. The fault is currently not present. CLEAR the DTC. |
| Transmission Control Module (TCM) | REPEAT the network test with the scan tool. | ||
| U0100 | Lost Communication With ECM /PCM | 4X4 control module ABS module Instrument Cluster (IC) TCM VDM |
CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, go to PINPOINT TEST A . |
| U0101 | Lost Communication With TCM | ABS module IC |
CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, go to PINPOINT TEST G . |
| U0102 | Lost Communication With Transfer Case Control Module (4x4CM) | IC TCM |
CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, go to PINPOINT TEST E . |
| U0114 | Lost Communication With Four-Wheel Drive Clutch Control Module | ABS module | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, go to PINPOINT TEST E . |
| U0121 | Lost Communication With ABS Control Module | 4X4 control module IC TCM |
CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, go to PINPOINT TEST B . |
| U0122 | Lost Communication With Vehicle Dynamics Control Module | IC | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, go to PINPOINT TEST F . |
| U0140 | Lost Communication With Body Control Module (GEM ) | ABS module Driver Seat Module (DSM) IC Liftgate/Trunk Module (LTM) Parking Aid Module (PAM) VDM |
CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, go to PINPOINT TEST H . |
| U0140 | Lost Communication With Body Control Module (GEM ) | Audio Control Module (ACM) Audio Rear Control Unit (RCU) module Global Positioning System Module (GPSM) |
Refer to DRIVER INFORMATION SYSTEM & ENTERTAINMENT SYSTEM . |
| U0140:00 | Lost Communication With Body Control Module (GEM): No Sub Type Information | ACM Audio Digital Signal Processing (DSP) module GPSM |
CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, go to PINPOINT TEST H . |
| U0151 | Lost Communication With Restraints Control Module | IC | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, go to PINPOINT TEST D . |
| U0155 | Lost Communication With Instrument Panel Cluster (IC ) Control Module | ACM | Refer to DRIVER INFORMATION SYSTEM & ENTERTAINMENT SYSTEM . |
| U0155 | Lost Communication With Instrument Panel Cluster (IC ) Control Module | ABS module DSM LTM PAM Smart Junction Box (SJB) VDM |
CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, go to PINPOINT TEST C . |
| U0155:00 | Lost Communication With Instrument Panel Cluster (IC ) Control Module: No Sub Type Information | ACM Audio DSP module GPSM |
CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, go to PINPOINT TEST C . |
| U0159 | Lost Communication With Parking Assist Control Module (PAM ) | ACM IC |
CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, go to PINPOINT TEST R . |
| U0159:00 | Lost Communication With Parking Assist Control Module (PAM ): No Sub Type Information | ACM | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, go to PINPOINT TEST R . |
| U0164 | Lost Communication With HVAC Control Module (EATC ) | IC | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, go to PINPOINT TEST I . |
| U0164:00 | Lost Communication With HVAC Control Module (EATC ): No Sub Type Information | ACM | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, go to PINPOINT TEST I . |
| U0184 | Lost Communication With Radio (ACM ) | Accessory Protocol Interface Module (APIM) Audio DSP module Audio RCU module Satellite Digital Audio Receiver System (SDARS) module |
Refer to DRIVER INFORMATION SYSTEM & ENTERTAINMENT SYSTEM . |
| U0184:00 | Lost Communication With Radio (ACM ): No Sub Type Information | Audio DSP module | Refer to DRIVER INFORMATION SYSTEM & ENTERTAINMENT SYSTEM . |
| U0193 | Lost Communication With Digital Audio Control Module (SDARS ) | ACM Audio RCU module |
Refer to DRIVER INFORMATION SYSTEM & ENTERTAINMENT SYSTEM . |
| U0193:00 | Lost Communication With Digital Audio Control Module (SDARS ): No Sub Type Information | ACM | Refer to DRIVER INFORMATION SYSTEM & ENTERTAINMENT SYSTEM . |
| U0196 | Lost Communication With Entertainment Control Module - Rear (AUX) | ACM APIM SDARS module Audio DSP module |
Refer to DRIVER INFORMATION SYSTEM & ENTERTAINMENT SYSTEM . |
| U0196:00 | Lost Communication With Entertainment Control Module - Rear (AUX): No Sub Type Information | ACM Audio DSP module |
Refer to DRIVER INFORMATION SYSTEM & ENTERTAINMENT SYSTEM . |
| U0197 | No Communication With the APIM | ACM SDARS module |
This DTC refers to the APIM , not the telephone control module. Refer to DRIVER INFORMATION SYSTEM & ENTERTAINMENT SYSTEM . |
| U0197:00 | No Communication With the APIM : No Sub Type Information | ACM Audio DSP module |
This DTC refers to the APIM , not the telephone control module. Refer to DRIVER INFORMATION SYSTEM & ENTERTAINMENT SYSTEM . |
| U0208 | Lost Communication With Seat Control Module | IC | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, go to PINPOINT TEST O . |
| U0230 | Lost Communication With Rear Gate Module (LTM ) | IC | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, go to PINPOINT TEST J . |
| U0238 | Lost Communication With Digital Audio Control Module "D" (DSP ) | ACM | Refer to DRIVER INFORMATION SYSTEM & ENTERTAINMENT SYSTEM . |
| U0238:00 | Lost Communication With Digital Audio Control Module "D" (DSP ): No Sub Type Information | ACM | Refer to DRIVER INFORMATION SYSTEM & ENTERTAINMENT SYSTEM . |
| U0244 | Lost Communication With Running Board Control Module (PRB ) | IC | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, go to PINPOINT TEST P . |
| U0249 | Lost Communication With Entertainment Control Module - Rear "B" (RCU ) | ACM APIM SDARS module |
Refer to DRIVER INFORMATION SYSTEM & ENTERTAINMENT SYSTEM . |
| U0249:00 | Lost Communication With Entertainment Control Module - Rear "B" (RCU ): No Sub Type Information | ACM | Refer to DRIVER INFORMATION SYSTEM & ENTERTAINMENT SYSTEM . |
| U0255 | Lost Communication With Front Controls Interface Module | APIM SDARS module |
Refer to DRIVER INFORMATION SYSTEM & ENTERTAINMENT SYSTEM . |
| U0255:00 | Lost Communication With Front Display Interface Module: No Sub Type Information | ACM | Refer to DRIVER INFORMATION SYSTEM & ENTERTAINMENT SYSTEM . |
| U0256 | Lost Communication With Front Display Interface Module | APIM SDARS module |
Refer to DRIVER INFORMATION SYSTEM & ENTERTAINMENT SYSTEM . |
| U0256:00 | Lost Communication With Front Controls Interface Module: No Sub Type Information | ACM | Refer to DRIVER INFORMATION SYSTEM & ENTERTAINMENT SYSTEM . |
| U0401 | Invalid Data Received from ECM /PCM A | ABS module | RETRIEVE and FOLLOW the DTCs from the PCM. |
| U0402 | Invalid Data Received from TCM | ABS module | RETRIEVE and FOLLOW the DTCs from the TCM . |
| U0414 | Invalid Data Received from Four-Wheel Drive Clutch Control Module | ABS module | Retrieve and follow DTCs from the 4X4 control module. |
| U0415 | Invalid Data Received from ABS Control Module | 4X4 control module | RETRIEVE and FOLLOW the DTCs from the ABS module. |
| U0422:00 | Invalid Data Received From Body Control Module: No Sub Type Information | GPSM | RETRIEVE and FOLLOW DTCs from the SJB . |
| U0423:00 | Invalid Data Received From Panel Cluster Control Module: No Sub Type Information | GPSM | RETRIEVE and FOLLOW DTCs from the IC . |
| U1900 | CAN Communication Bus Fault-Receive Error | 4X4 control module Power Running Board (PRB) module Restraints Control Module (RCM) |
Go to SYMPTOM CHART for the module that failed the network test. |
| U1901 | CAN Network #2 Communication Bus Fault-Receive Error | ABS module | Refer to ANTI-LOCK BRAKE SYSTEM - VEHICLE DYNAMIC SYSTEM . |
| U2011 | Module Transmitted Invalid Data (Non SCP ) | VDM | RETRIEVE and FOLLOW non-network DTCs from other modules. Refer to MULTIFUNCTION ELECTRONIC MODULE . |
| U2013 | Compass Module is not Responding | IC | Refer to INSTRUMENTATION SYSTEM, MESSAGE CENTER & WARNING CHIMES . |
| U2023 | Fault Received From External Node | 4X4 control module IC PAM |
DTC U2023 is set when a module receives invalid network data from another module with a faulted input. RETRIEVE and REPAIR all non-network DTCs in the other modules on the network. Refer to MULTIFUNCTION ELECTRONIC MODULE for a list of all DTCs. |
| U2471 | Unexpected PRNDL State | DSM LTM PAM |
RETRIEVE and FOLLOW non-network DTCs from other modules. Refer to MULTIFUNCTION ELECTRONIC MODULE . |
| U2472 | Unexpected Ignition State | IC LTM PAM SJB |
RETRIEVE and FOLLOW non-network DTCs from other modules. Refer to MULTIFUNCTION ELECTRONIC MODULE . |
| U2473 | Unexpected Vehicle Speed (VSS ) | ACM PAM LTM SJB |
RETRIEVE and FOLLOW non-network DTCs from other modules. Refer to MULTIFUNCTION ELECTRONIC MODULE . |
Factory Service Tools
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.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.