Supplemental Restraint System (SRS) Diagnostic Trouble Code (DTC) Chart
WARNING: This page is about a different car, the 2007 Lincoln MKX and 2007 Ford Edge. 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) DIAGNOSTIC TROUBLE CODE (DTC) CHART
| DTCa | Description | Retrieved From | Action To Take |
|---|---|---|---|
| Continuous lamp | The Air Bag Warning Indicator is Illuminated Continuously (RCM Disconnected or Inoperative, Loss of Battery Feed or Loss of Signal Ground) | RCM | Go to Pinpoint Test A . |
| B229B | Occupant Classification Sensor 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 |
NOTE:
DTC B1013 will set if a new Occupant Classification System (OCS) component is installed. Occupant Classification System Calibration Fault |
OCSM | CARRY OUT Occupant Classification Sensor (OCS) System Reset. REFER to Occupant Classification Sensor (OCS) System Reset . |
| B1231 | Event Threshold Exceeded | RCM | INSTALL a new RCM and impact sensors. REFER to Inspection and Repair After a Supplemental Restraint System (SRS) Deployment . |
| B1231 | Event Threshold Exceeded | OCSM | INSTALL a new passenger seat track assembly with OCS weight sensor bolts. REFER to SEATING 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 . |
| 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
. |
| B1318 | Battery Voltage Low | RCM | CHECK battery voltage; to be above 8 volts. REFER to CHARGING SYSTEM - GENERAL INFORMATION . |
| 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
. |
| B1342 | ECU (RCM) Is Faulted | RCM | INSTALL a new RCM. REFER to Restraints Control Module (RCM) . |
| B1342 | ECU (OCSM) Is Faulted | OCSM | Go to Pinpoint Test B |
| 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 SRS. The OCSM reported a fault message to the RCM. CARRY OUT on-demand self-test of the OCSM and RETRIEVE continuous DTCs. |
| B2290 | Occupant Classification System Fault | OCSM | 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) . |
| C1941 | Zero Seat Weight Test Failure | OCSM | 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 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 to diagnose the communication concern. |
| U0100 | Lost Communication With ECM/PCM | OCSM | REFER to MODULE COMMUNICATIONS NETWORK to diagnose the communication concern. |
| U0151 | Lost Communication With Restraints Control Module | OCSM | REFER to MODULE COMMUNICATIONS NETWORK to diagnose the communication concern. |
| U0154 | Lost Communication With Restraints Occupant Classification System Module | RCM | REFER to MODULE COMMUNICATIONS NETWORK 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 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 OCSM DTCs, CLEAR all RCM DTCs and PROVE OUT the SRS. 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 SRS. 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 Module - Manual Seat Track or Occupant Classification Module - Power Seat Track . |
| U2050 | No Application Present | RCM | INSTALL a new RCM. REFER to Restraints Control Module (RCM) . |
| U2050 | No Application Present | OCSM | INSTALL a new OCSM. |
| U2051 | One or More Calibration Files Missing/Corrupt | RCM | INSTALL a new RCM. REFER to Restraints Control Module (RCM) . |
a DTC: Diagnostic trouble code, retrieved using scan tool.