DTC Charts

WARNING: This page is about a different car, the 2009 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Network DTCs (U-codes) are often a result of intermittent concerns such as faulty wiring or low battery voltage occurrences. Additionally, vehicle service procedures such as module reprogramming will often set network DTCs. Replacing a module to resolve a network DTC is unlikely to resolve the concern. To prevent repeat network DTC concerns, inspect all network wiring, especially connectors. Test the vehicle battery, refer to BATTERY, MOUNTING AND CABLES .

NOTE: DTC U1900 will set in a module that is reporting a communication fault from another module on the data bus. The module that reports the fault is not the problem module.

COMMUNICATION NETWORK DTC CHART

DTC	Description	Source	Action
U0073	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 DTC. REPEAT the network test with the scan tool.
U0073	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 DTC. REPEAT the network test with the scan tool.
U0073	Control Module Communication Bus A Off	Smart junction box (SJB)	DTC U0073 indicates 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.
U0140	Lost Communication With Body Control Module (GEM)	Audio control module (ACM)	REFER to INFORMATION AND ENTERTAINMENT SYSTEMS .
U0155	Lost Communication With Instrument Panel Cluster (IC) Control Module	ACM	REFER to INFORMATION AND ENTERTAINMENT SYSTEMS .
U0159	Lost Communication With Parking Assist Control Module (PAM)	ACM	DISREGARD this DTC.
U0184	Lost Communication With Radio (ACM)	Satellite digital audio receiver system (SDARS) module	REFER to INFORMATION AND ENTERTAINMENT SYSTEMS .
U0193	Lost Communication With Digital Audio Control Module (SDARS)	ACM	REFER to INFORMATION AND ENTERTAINMENT SYSTEMS .
U0196	Lost Communication With Entertainment Control Module - Rear (AUX)	ACM	DISREGARD this DTC. This vehicle is not equipped with an auxiliary ACM.
U0197	Lost Communication With Telephone Control Module	ACM	DISREGARD this DTC. This vehicle is not equipped with a telephone control module.
U0197	Lost Communication With Telephone Control Module	SDARS module	DISREGARD this DTC. This vehicle is not equipped with a telephone control module.
U0238	Lost Communication With Digital Audio Control Module "D" (DSP)	ACM	DISREGARD this DTC. This vehicle is not equipped with a networked audio digital signal processing (DSP) module.
U0249	Lost Communication With Entertainment Control Module - Rear "B" (RCU)	ACM	DISREGARD this DTC. This vehicle is not equipped with a rear entertainment module (RETM).
U1900	CAN Communication Bus Fault-Receive Error	ABS module	Go to Symptom Chart for module that failed network test.
U1900	CAN Communication Bus Fault-Receive Error	IC	Go to Symptom Chart for module that failed network test.
U1900	CAN Communication Bus Fault-Receive Error	SJB	Go to Symptom Chart for module that failed network test.
U2011	Module Transmitted Invalid Data (Non-SCP)	ABS module	RETRIEVE and FOLLOW DTCs from the PCM.
U2023	Fault Received From External Node	IC	RETRIEVE AND FOLLOW non-network DTCs from module with non-network fault code present. REFER to MULTIFUNCTION ELECTRONIC MODULES .
U2033	VSM Communication Link Failure	SJB	The communication network to the overhead console is not accessible through the vehicle data link connector (DLC). REFER to ANTI-THEFT - PERIMETER .
U2473	Unexpected Vehicle Speed (VSS)	ACM	REFER to INFORMATION AND ENTERTAINMENT SYSTEMS .