DTC Charts

The DTCs can be retrieved from the restraints control module (RCM) and the occupant classification system module (OCSM) with a scan tool via the data link connector (DLC).

RESTRAINTS CONTROL MODULE (RCM) DTC CHART

DTC^a	Description	Retrieved From	Action To Take
Continuous lamp	The Air Bag Warning Indicator is Illuminated Continuously	Restraints control module (RCM)	Go to Pinpoint Test A .
B1231	Event Threshold Exceeded	RCM	INSTALL a new RCM and impact sensors. REFER to Inspection and Repair After a Supplemental Restraint System (SRS) Deployment .
B1317	Battery Voltage High	RCM	CHECK battery voltage; to be below 18 volts. REFER to CHARGING SYSTEM - GENERAL INFORMATION article.
B1318	Battery Voltage Low	RCM	CHECK battery voltage; to be above 8 volts. REFER to CHARGING SYSTEM - GENERAL INFORMATION article.
B1342	ECU (RCM) Is Faulted	RCM	INSTALL a new RCM. REFER to Restraints Control Module (RCM) .
B1868	Lamp Air Bag Warning Indicator Circuit Failure	RCM	Go to Pinpoint Test C .
B1884	PAD Warning Lamp Circuit Failure	RCM	Go to Pinpoint Test D .
B1890	PAD Warning Lamp Circuit Short to Battery	RCM	Go to Pinpoint Test E .
B2290	Occupant Classification System Fault	RCM	NOTE: If no on-demand or continuous DTC is present in the OCSM and DTC B2290 is only present in the RCM as a continuous DTC, CLEAR all RCM DTCs and PROVE OUT the system. NOTE: On-Demand DTC B2290 is reported by the RCM indicating the presence of a fault in the OCS system. Go to Pinpoint Test F .
B2292	Restraint System - Seatbelt Pretensioner Fault	RCM	Go to Pinpoint Test G .
B2293	Restraint System - Air Bag Fault	RCM	Go to Pinpoint Test H .
B2294	Restraint System - Curtain Fault	RCM	Go to Pinpoint Test I .
B2295	Restraint System - Side Air Bag Fault	RCM	Go to Pinpoint Test J .
B2296	Restraint System - Impact Sensor Fault	RCM	Go to Pinpoint Test K .
B2432	Drivers Seat Belt Buckle Switch Circuit Open	RCM	Go to Pinpoint Test L .
B2433	Drivers Seat Belt Buckle Switch Circuit Short to Battery	RCM	Go to Pinpoint Test M .
B2434	Drivers Seat Belt Buckle Switch Circuit Short to Ground	RCM	Go to Pinpoint Test N .
B2435	Drivers Seat Belt Buckle Switch Resistance Out of Range	RCM	Go to Pinpoint Test O .
B2436	Passengers Seat Belt Buckle Switch Circuit Open	RCM	Go to Pinpoint Test P .
B2437	Passengers Seat Belt Buckle Switch Circuit Short to Battery	RCM	Go to Pinpoint Test Q .
B2438	Passengers Seat Belt Buckle Switch Short to Ground	RCM	Go to Pinpoint Test R .
B2439	Passengers Seat Belt Buckle Switch Resistance Out of Range	RCM	Go to Pinpoint Test S .
B2477	Module Configuration Failure	RCM	NOTE: When installing a new RCM, always make sure the correct RCM is being installed. If an incorrect RCM is installed, erroneous DTCs will result. INSTALL a new RCM. REFER to Restraints Control Module (RCM) .
B2792	Cross Link Between Firing Loops	RCM	Go to Pinpoint Test T .
C1414	Incorrect Module Design Level	RCM	INSTALL a new RCM. REFER to Restraints Control Module (RCM) .
C1946	Front Driver's Seat Track Position Switch Circuit Open	RCM	Go to Pinpoint Test V .
C1947	Front Driver's Seat Track Position Switch Circuit Short to Ground	RCM	Go to Pinpoint Test W .
C1948	Front Driver's Seat Track Position Switch Circuit Resistance Out of Range	RCM	Go to Pinpoint Test X .
C1982	Front Driver's Seat Track Position Switch Circuit Short to Battery	RCM	Go to Pinpoint Test Y .
U0100	Lost Communication With ECM/PCM	RCM	REFER to MODULE COMMUNICATIONS NETWORK article to diagnose the communication concern.
U0154	Lost Communication With Restraints Occupant Classification System Module	RCM	REFER to MODULE COMMUNICATIONS NETWORK article to diagnose the communication concern.
U0401	Invalid Data received From ECM/PCM A	RCM	RETRIEVE PCM DTCs. If DTCs are present in the PCM, REFER to Introduction - Gasoline Engines article to diagnose the concern. If DTCs are not present in the PCM and DTC U0401 is present in the RCM as a on-demand DTC, INSTALL a new RCM. REFER to Restraints Control Module (RCM) .
U0455	Invalid Data Received From Restraints Occupant Classification System Module	RCM	REPAIR all on-demand OCS DTCs, CLEAR all RCM DTCs and PROVE OUT the system. If no on-demand or continuous DTCs are present in the OCSM and DTC U0455 is only present in the RCM continuous, CLEAR all RCM DTCs and PROVE OUT the system. If no on-demand or continuous DTCs are present in the OCSM and DTC U0455 is present on-demand in the RCM, INSTALL a new OCSM. REFER to Occupant Classification System Module (OCSM) - Manual Seat Track or Occupant Classification System Module (OCSM) - Power Seat Track .
U2050	No Application Present	RCM	INSTALL a new RCM. REFER to Restraints Control Module (RCM) .
U2051	One or More Calibration Files Missing/Corrupt	RCM	INSTALL a new RCM. REFER to Restraints Control Module (RCM) .

^a DTC: Retrieved using scan tool.

OCCUPANT CLASSIFICATION SENSOR (OCS) SYSTEM DTC CHART

DTC^a	Description	Retrieved From	Action To Take
B229B	Occupant Classification System Obstruction	Occupant classification system module (OCSM)	NOTE: If no on-demand or continuous DTC is present in the RCM and DTC B229B is only present in the OCSM as continuous, RESOLVE and CLEAR all OCSM DTCs and PROVE OUT the SRS. Go to Pinpoint Test U .
B1013	Occupant Classification System Calibration Fault	OCSM	Go to Pinpoint Test Z .
B1231	Event Threshold Exceeded	OCSM	INSTALL a new passenger seat track assembly with OCS weight sensor bolts. REFER to SEATING article and Inspection and Repair After a Supplemental Restraint System (SRS) Deployment .
B1317	Battery Voltage High	OCSM	NOTE: If no on-demand or continuous DTC is present in the RCM and DTC B1317 is only present in the OCSM continuous, CLEAR all OCSM DTCs and PROVE OUT the system. CHECK battery voltage; to be below 18 volts. REFER to CHARGING SYSTEM - GENERAL INFORMATION article.
B1318	Battery Voltage Low	OCSM	NOTE: If no on-demand or continuous DTC is present in the RCM and DTC B1318 is only present in the OCSM continuous, CLEAR all OCSM DTCs and PROVE OUT the system. CHECK battery voltage; to be above 8 volts. REFER to CHARGING SYSTEM - GENERAL INFORMATION article.
B1342	ECU (OCSM) is Faulted	OCSM	Go to Pinpoint Test B .
B2290	Occupant Classification System Fault	OCSM	Go to Pinpoint Test F .
C1941	Zero Seat Weight Test Failure	OCSM	REFER to Occupant Classification Sensor (OCS) System Zero Seat Weight Test .
U0100	Lost Communication With ECM/PCM	OCSM	REFER to MODULE COMMUNICATIONS NETWORK article to diagnose the communication concern.
U0151	Lost Communication With Restraints Control Module	OCSM	REFER to MODULE COMMUNICATIONS NETWORK article to diagnose the communication concern.
U2023	Fault Received From External Node	OCSM	DTC 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.
U2050	No Application Present	OCSM	INSTALL a new OCSM.

^a DTC: Retrieved using scan tool.