DTC Charts

WARNING: This page is about a different car, the 2008 Ford RV Cutaway, 2008 Ford Econoline, 2008 Ford E450 Super Duty, and 2008 Ford Cutaway. 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 article.

COMMUNICATION NETWORK DTC CHART

DTC	Description	Source	Action
U0002	High Speed CAN Communication Bus Performance	Instrument cluster (IC)	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.
U0011	Medium Speed CAN Communication Bus Performance	IC	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.
U0028	Vehicle Communication Bus A	ABS module	REFER to VEHICLE DYNAMIC SYSTEMS article.
U0073	Control Module Communication Bus Off	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.
U0100	Lost Communication With ECM/PCM	IC	Go to Pinpoint Test A .
U0100	Lost Communication With ECM/PCM	Restraints control module (RCM)	Go to Pinpoint Test A .
U0115	Lost Communication With ECM/PCM - Secondary (SPCM)	ABS module	Go to Pinpoint Test A .
U0121	Lost Communication With Anti-Lock Brake System (ABS) Control Module	IC	Go to Pinpoint Test B .
U0151	Lost Communication With Restraints Control Module (RCM)	IC	Go to Pinpoint Test E .
U0155	Lost Communication With Instrument Panel Cluster (IC) Control Module	Vehicle security module (VSM)	If the IC failed the network test, go to Pinpoint Test C . Otherwise, REFER to INSTRUMENT CLUSTER (IC) AND WARNING CHIMES article.
U0155	Lost Communication With Instrument Panel Cluster (IC) Control Module	ABS module	If the IC failed the network test, go to Pinpoint Test C . Otherwise, REFER to INSTRUMENT CLUSTER (IC) AND WARNING CHIMES article.
U0168	Lost Communication With Vehicle Security Control Module	IC	Go to Pinpoint Test D .
U2023	Fault Received From External Node	Instrument cluster	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 article for a list of all DTCs.
U2023	Fault Received From External Node	RCM	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 article for a list of all DTCs.
U2023	Fault Received From External Node	VSM	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 article for a list of all DTCs.
U2510	CAN - Invalid Data For Vehicle Security	IC	REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article.
U2511	CAN - Data Mis-Match (Receive Data Does Not Match Expected)	IC	REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article.