Restraint Control Module (RCM) DTC Chart

WARNING: This page is about a different car, the 2009 Mercury Milan, 2009 Lincoln MKZ, and 2009 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

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).

SUPPLEMENTAL RESTRAINT SYSTEM (SRS) 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 (Crash Data Memory Full)	RCM	INSTALL a new RCM, CARRY OUT programmable module installation (PMI) and INSTALL new impact sensors. REFER to Inspection and Repair After a Supplemental Restraint System (SRS) Deployment and Restraints Control Module (RCM) .
B1231	Event Threshold Exceeded (Crash Data Memory Full)	Occupant classification system module (OCSM)	INSTALL new OCS rails and CLEAR all OCSM and RCM DTCs. REFER to Occupant Classification Sensor and 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.
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 SRS. 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.
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 SRS. 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 and CARRY OUT PMI. REFER to Restraints Control Module (RCM) .
B1342	ECU (OCSM) is Faulted	OCSM	CARRY OUT Occupant Classification Sensor (OCS) System Reset. REFER to Occupant Classification Sensor (OCS) System Reset . DO NOT carry out the Zero Seat Weight Test at this time. CLEAR the DTCs and REPEAT the self-test. If the DTC is no longer present, CARRY OUT the Zero Weight Test to complete the repair. If the DTC is still present, INSTALL a new OCSM. REFER to Occupant Classification System Module (OCSM) .
B1884	PAD Warning Lamp Circuit Failure	RCM	Go to Pinpoint Test B .
B1890	PAD Warning Lamp Circuit Short to Battery	RCM	Go to Pinpoint Test C .
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 SRS. The OCSM reported a fault message to the RCM. CARRY OUT on-demand self test of the OCSM and RETRIEVE continuous DTCs.
B2290 (Rail Type System)	Occupant Classification System Fault	OCSM	NOTE: If no on-demand or continuous DTC is present in the RCM and DTC B2290 is only present in the OCSM continuous, CLEAR all OCSM DTCs and PROVE OUT the SRS. Go to Pinpoint Test D .
B2292	Restraint System - Safety Belt Pretensioner Fault	RCM	Go to Pinpoint Test E .
B2293	Restraint System - Air Bag Fault	RCM	Go to Pinpoint Test F .
B2294	Restraint System - Curtain Fault	RCM	Go to Pinpoint Test G .
B2295	Restraint System - Side Air Bag Fault	RCM	Go to Pinpoint Test H .
B2296	Restraint System - Impact Sensor Fault	RCM	Go to Pinpoint Test I .
B2434	Drivers Seat Belt Buckle Switch Circuit Short to Ground	RCM	Go to Pinpoint Test J .
B2435	Drivers Seat Belt Buckle Switch Resistance Out of Range	RCM	Go to Pinpoint Test K .
B2438	Passengers Seat Belt Buckle Switch Short to Ground	RCM	Go to Pinpoint Test L .
B2439	Passengers Seat Belt Buckle Switch Resistance Out of Range	RCM	Go to Pinpoint Test M .
B2477	Module Configuration Failure	RCM	CARRY OUT PMI on the RCM. CLEAR the DTC. If the DTC does not clear, CARRY OUT PMI on the RCM once again. CLEAR the DTC. If the DTC does not clear, INSTALL a new RCM and CARRY OUT PMI. REFER to Restraints Control Module (RCM) .
B2607	Harness/Configuration Mismatch	RCM	INSTALL a new RCM and CARRY OUT PMI. REFER to Restraints Control Module (RCM) .
B2691	Seat Belt Buckle Switch Circuit Fault, Front Driver's Side	RCM	Go to Pinpoint Test N .
B2692	Front Passenger's Seat Belt Buckle Switch Circuit Fault	RCM	Go to Pinpoint Test O .
B2792	Cross Link Between Firing Loops	RCM	Go to Pinpoint Test P .
B229A	Occupant Classification System Contamination	OCSM	NOTE: If no on-demand or continuous DTC is present in the RCM and DTC B229A is only present in the OCSM continuous, CLEAR all OCSM DTCs and PROVE OUT the SRS. Go to Pinpoint Test Q .
B229B	Occupant Classification System Obstruction	OCSM	NOTE: If no on-demand or continuous DTC is present in the RCM and DTC B229B is only present in the OCSM continuous, CLEAR all OCSM DTCs and PROVE OUT the SRS. Go to Pinpoint Test R .
C1414	Incorrect Module Design Level (Incorrect Vehicle Application)	RCM	INSTALL a new RCM and CARRY OUT PMI. REFER to Restraints Control Module (RCM) .
C1941	Zero Seat Weight Test Failure	OCSM	Can only be reported when carrying out Zero Seat Weight Test. REFER to Occupant Classification Sensor (OCS) System Zero Seat Weight Test .
C1946	Front Driver's Seat Track Position Switch Circuit Open	RCM	Go to Pinpoint Test S .
C1947	Front Driver's Seat Track Position Switch Circuit Short to Ground	RCM	Go to Pinpoint Test T .
C1948	Front Driver's Seat Track Position Switch Circuit Resistance Out of Range	RCM	Go to Pinpoint Test U .
C1981	Front Driver's Seat Track Position Switch Circuit Fault	RCM	Go to Pinpoint Test V .
U0300	Internal Control Module Software Incompatibility	RCM	INSTALL a new RCM and CARRY OUT PMI. REFER to Restraints Control Module (RCM) .
U1900	CAN Communication Bus Fault - Receive Error	RCM	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. Do not install a new RCM as part of repair for a RCM DTC U1900 fault. VIEW and RECORD IC_MSG_RCM, PCM_MSG_RCM and OCS_MSG_RCM PIDs to determine the module with the concern. REFER to MODULE COMMUNICATIONS NETWORK article to diagnosis the high-speed controller area network (HS-CAN)/module concern.
U1900	CAN Communication Bus Fault - Receive Error	OCSM	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. Do not install a new OCSM as part of repair for a OCS DTC U1900 fault. REFER to MODULE COMMUNICATIONS NETWORK article to diagnosis the HS-CAN/RCM concern.
U2050	No Application Present	RCM	INSTALL a new RCM and CARRY OUT PMI. REFER to Restraints Control Module (RCM) .
U2050	No Application Present	OCSM	NOTE: If no on-demand or continuous DTC is present in the RCM and DTC U2050 is only present in the OCSM continuous, CLEAR all OCSM DTCs and PROVE OUT the SRS. INSTALL a new OCSM. REFER to Occupant Classification System Module (OCSM) .
U2051	One or More Calibration Files Missing/Corrupt	RCM	INSTALL a new RCM and CARRY OUT PMI. REFER to Restraints Control Module (RCM) .
U2051	One or More Calibration Files Missing/Corrupt	OCSM	INSTALL a new OCSM. REFER to Occupant Classification System Module (OCSM) .

^a DTC: Retrieved using scan tool.