2012 Lincoln Navigator RWDFACTORY OEM SERVICE PROCEDURE

Module Communications 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. REPEAT the network test with the scan tool.
U0100 Lost Communication With ECM/PCM 4X4 control module ABS module Instrument Cluster (IC) VDM CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test A .
U0102 Lost Communication With Transfer Case Control Module (4x4CM) IC 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 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 G .
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 INFORMATION AND ENTERTAINMENT SYSTEMS .
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 G .
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 INFORMATION AND ENTERTAINMENT SYSTEMS .
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 Q .
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 Q .
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 H .
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 H .
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 INFORMATION AND ENTERTAINMENT SYSTEMS .
U0184:00 Lost Communication With Radio (ACM): No Sub Type Information Audio DSP module REFER to INFORMATION AND ENTERTAINMENT SYSTEMS .
U0193 Lost Communication With Digital Audio Control Module (SDARS) ACM Audio RCU module REFER to INFORMATION AND ENTERTAINMENT SYSTEMS .
U0193:00 Lost Communication With Digital Audio Control Module (SDARS): No Sub Type Information ACM REFER to INFORMATION AND ENTERTAINMENT SYSTEMS .
U0196 Lost Communication With Entertainment Control Module - Rear (AUX) ACM APIM SDARS module Audio DSP module REFER to INFORMATION AND ENTERTAINMENT SYSTEMS .
U0196:00 Lost Communication With Entertainment Control Module - Rear (AUX): No Sub Type Information ACM Audio DSP module REFER to INFORMATION AND ENTERTAINMENT SYSTEMS .
U0197 No Communication With the APIM ACM SDARS module This DTC refers to the APIM, not the telephone control module. REFER to INFORMATION AND ENTERTAINMENT SYSTEMS .
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 INFORMATION AND ENTERTAINMENT SYSTEMS .
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 P .
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 I .
U0238 Lost Communication With Digital Audio Control Module "D" (DSP) ACM REFER to INFORMATION AND ENTERTAINMENT SYSTEMS .
U0238:00 Lost Communication With Digital Audio Control Module "D" (DSP): No Sub Type Information ACM REFER to INFORMATION AND ENTERTAINMENT SYSTEMS .
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 N .
U0249 Lost Communication With Entertainment Control Module - Rear "B" (RCU) ACM APIM SDARS module REFER to INFORMATION AND ENTERTAINMENT SYSTEMS .
U0249:00 Lost Communication With Entertainment Control Module - Rear "B" (RCU): No Sub Type Information ACM REFER to INFORMATION AND ENTERTAINMENT SYSTEMS .
U0255 Lost Communication With Front Controls Interface Module APIM SDARS module REFER to INFORMATION AND ENTERTAINMENT SYSTEMS .
U0255:00 Lost Communication With Front Display Interface Module: No Sub Type Information ACM REFER to INFORMATION AND ENTERTAINMENT SYSTEMS .
U0256 Lost Communication With Front Display Interface Module APIM SDARS module REFER to INFORMATION AND ENTERTAINMENT SYSTEMS .
U0256:00 Lost Communication With Front Controls Interface Module: No Sub Type Information ACM REFER to INFORMATION AND ENTERTAINMENT SYSTEMS .
U0401 Invalid Data Received from ECM/PCM A ABS module RETRIEVE and FOLLOW the DTCs from the PCM.
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 (ABS) AND STABILITY CONTROL .
U2011 Module Transmitted Invalid Data (Non SCP) VDM RETRIEVE and FOLLOW non-network DTCs from other modules. REFER to MULTIFUNCTION ELECTRONIC MODULES .
U2013 Compass Module is not Responding IC REFER to INSTRUMENTATION, MESSAGE CENTER, AND 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 MODULES 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 MODULES .
U2472 Unexpected Ignition State IC LTM PAM SJB RETRIEVE and FOLLOW non-network DTCs from other modules. REFER to MULTIFUNCTION ELECTRONIC MODULES .
U2473 Unexpected Vehicle Speed (VSS) ACM PAM LTM SJB RETRIEVE and FOLLOW non-network DTCs from other modules. REFER to MULTIFUNCTION ELECTRONIC MODULES .
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