Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2007 Ford Focus STFACTORY OEM SERVICE PROCEDURE
Supplemental Restraint System DTCS
SUPPLEMENTAL RESTRAINT SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Perform Test |
|---|---|---|
| - | The Air Bag Warning Indicator is Illuminated Continuously, RCM Disconnected or Inoperative, Loss of Battery Feed, or Loss of Signal Ground | Go to Pinpoint Test A . |
| B104B Cross link DTCs will be retrieved in pairs to identify the 2 cross linked components. | Driver Side Crash Sensor Cross Link to Another Sensor | Go to Pinpoint Test B . |
| B104C Cross link DTCs will be retrieved in pairs to identify the 2 cross linked components. | Passenger Side Crash Sensor Cross Link to Another Sensor | Go to Pinpoint Test B . |
| B104D Cross link DTCs will be retrieved in pairs to identify the 2 cross linked components. | Front Crash Sensor Cross Link to Another Sensor | Go to Pinpoint Test B . |
| B104E | Driver Side Crash Sensor Short to Gnd/VBatt | Go to Pinpoint Test C . |
| B104F | Passenger Side Crash Sensor Internal Fault | INSTALL a new passenger side impact sensor. REFER to Side Impact Sensor . |
| B105A | Crash Counter-Reached Maximum | INSTALL a new RCM and impact sensors. REFER to Inspection and Repair After a Supplemental Restraint System (SRS) Deployment . |
| B1047 Cross link DTCs will be retrieved in pairs to identify the 2 cross linked components. | Driver Side, Side Mount Air Bag Cross Link to Another Firing Loop | Go to Pinpoint Test D . |
| B1048 Cross link DTCs will be retrieved in pairs to identify the 2 cross linked components. | Passenger Side Air Bag Cross Link to Another Firing Loop | Go to Pinpoint Test E . |
| B1049 Cross link DTCs will be retrieved in pairs to identify the 2 cross linked components. | Passenger Seat Belt Pretensioner Cross Link to Another Firing Loop | Go to Pinpoint Test F . |
| B1050 | Passenger Side Crash Sensor Short to Gnd/VBatt Fault | Go to Pinpoint Test G . |
| B1051 | Driver Side Crash Sensor Internal Fault | INSTALL a new driver side impact sensor. REFER to Side Impact Sensor . |
| B1052 Cross link DTCs will be retrieved in pairs to identify the 2 cross linked components. | Passenger Seat Belt Buckle Switch Cross Link to Another Sensor | Go to Pinpoint Test H . |
| B1053b | Driver Seat Belt Buckle Switch Cross Link to Another Sensor | Go to Pinpoint Test I . |
| B1054 Cross link DTCs will be retrieved in pairs to identify the 2 cross linked components. | Driver Seat Belt Pretensioner Cross Link to Another Firing Loop | Go to Pinpoint Test J . |
| B1055 Cross link DTCs will be retrieved in pairs to identify the 2 cross linked components. | Passenger Side, Side Mount Air Bag Cross Link to Another Firing Loop | Go to Pinpoint Test K . |
| B1057 Cross link DTCs will be retrieved in pairs to identify the 2 cross linked components. | Driver Air Bag Cross Link to Another Firing Loop | Go to Pinpoint Test L . |
| B1058 Cross link DTCs will be retrieved in pairs to identify the 2 cross linked components. | Driver Air Bag Cross Link to Another Firing Loop - Loop #2 | Go to Pinpoint Test M . |
| B1059 Cross link DTCs will be retrieved in pairs to identify the 2 cross linked components. | Passenger Air Bag Cross Link to Another Firing Loop - Loop #2 | Go to Pinpoint Test N . |
| B1231 | Longitudinal Acceleration Threshold Exceeded | INSTALL a new RCM and impact sensors. REFER to Inspection and Repair After a Supplemental Restraint System (SRS) Deployment . |
| B1317 | Battery Voltage High | CHECK battery voltage; to be below 16 volts. REFER to CHARGING SYSTEM - GENERAL INFORMATION article. |
| B1318 | Battery Voltage Low | CHECK battery voltage; to be above 9.0 volts. REFER to CHARGING SYSTEM - GENERAL INFORMATION article. |
| B1342 | RCM Is Faulted | INSTALL a new RCM. REFER to Restraints Control Module (RCM) . |
| B1868 | Lamp Air Bag Warning Indicator Circuit Failure | Go to Pinpoint Test O . |
| B1877 | Seat Belt Driver Pretensioner Circuit Open Fault | Go to Pinpoint Test P . |
| B1878 | Seat Belt Driver Pretensioner Circuit Short to Battery Fault | Go to Pinpoint Test Q . |
| B1879 | Seat Belt Driver Pretensioner Circuit Short to Ground Fault | Go to Pinpoint Test R . |
| B1881 | Seat Belt Passenger Pretensioner Circuit Open Fault | Go to Pinpoint Test S . |
| B1882 | Seat Belt Passenger Pretensioner Circuit Short to Battery Fault | Go to Pinpoint Test T . |
| B1883 | Seat Belt Passenger Pretensioner Circuit Short to Ground Fault | Go to Pinpoint Test U . |
| B1884 | PAD Warning Lamp Circuit Failure Fault | Go to Pinpoint Test V . |
| B1885 | Seat Belt Driver Pretensioner Circuit Low Resistance on Squib Fault | Go to Pinpoint Test P . |
| B1886 | Seat Belt Passenger Pretensioner Circuit Low Resistance on Squib Fault | Go to Pinpoint Test S . |
| B1890 | PAD Warning Lamp Circuit Short to Battery Fault | Go to Pinpoint Test W . |
| B1916 | Air Bag Driver Circuit Short to Battery Fault | Go to Pinpoint Test X . |
| B1921 | Air Bag Diagnostic Monitor Ground Circuit Open | Go to Pinpoint Test Y . |
| B1925 | Air Bag Passenger Circuit Short to Battery Fault | Go to Pinpoint Test Z . |
| B1932 | Air Bag Driver Circuit Open Fault | Go to Pinpoint Test AA . |
| B1933 | Air Bag Passenger Circuit Open Fault | Go to Pinpoint Test AB . |
| B1934 | Air Bag Driver Inflator Circuit Resistance Low on Squib Fault | Go to Pinpoint Test AA . |
| B1935 | Air Bag Passenger Inflator Circuit Resistance Low on Squib Fault | Go to Pinpoint Test AB . |
| B1936 | Air Bag Driver Circuit Short to Ground Fault | Go to Pinpoint Test AC . |
| B1938 | Air Bag Passenger Circuit Short to Ground Fault | Go to Pinpoint Test AD . |
| B1992 | Driver Side, Side Mount Air Bag Circuit Short to VBatt Fault | Go to Pinpoint Test AE . |
| B1993 | Driver Side Mount Air Bag Circuit Short to Ground Fault | Go to Pinpoint Test AF . |
| B1994 | Driver Side, Side Mount Air Bag Circuit Open Fault | Go to Pinpoint Test AG . |
| B1995 | Driver Side, Side Mount Air Bag Circuit Low Resistance on Squib Fault | Go to Pinpoint Test AG . |
| B1996 | Passenger Side, Side Mount Air Bag Circuit Short to VBatt Fault | Go to Pinpoint Test AH . |
| B1997 | Passenger Side, Side Mount Air Bag Circuit Short to Ground Fault | Go to Pinpoint Test AI . |
| B1998 | Passenger Side, Side Mount Air Bag Circuit Open Fault | Go to Pinpoint Test AJ . |
| B1999 | Passenger Side, Side Mount Air Bag Circuit Low Resistance on Squib Fault | Go to Pinpoint Test AJ . |
| B2226 | Front Crash Sensor Internal Fault | INSTALL a new front impact severity sensor. REFER to Front Impact Severity Sensor . |
| B2227 | Front Crash Sensor Driver Communications Fault | Go to Pinpoint Test AK . |
| B2228 | Air Bag Driver Circuit Short to Ground Loop #2 Fault | Go to Pinpoint Test AL . |
| B2229 | Air Bag Passenger Circuit Short to Ground Loop #2 Fault | Go to Pinpoint Test AM . |
| B2230 | Air Bag Driver Circuit Short to Battery Loop #2 Fault | Go to Pinpoint Test AN . |
| B2231 | Air Bag Passenger Circuit Short to Battery Loop #2 Fault | Go to Pinpoint Test AO . |
| B2232 | Air Bag Driver Circuit Open Loop #2 Fault | Go to Pinpoint Test AP . |
| B2233 | Air Bag Passenger Circuit Open Loop #2 Fault | Go to Pinpoint Test AQ . |
| B2234 | Air Bag Driver Inflator Circuit Resistance Low on Squib Loop #2 Fault | Go to Pinpoint Test AP . |
| B2235 | Air Bag Passenger Inflator Circuit Resistance Low on Squib Loop #2 Fault | Go to Pinpoint Test AQ . |
| B2290 | Occupant Classification System Fault DTC has associated bit-mapped PIDs. | Go to Pinpoint Test AR . |
| B2432 | Drivers Seat Belt Buckle Switch Circuit Open Fault | Go to Pinpoint Test AS . |
| B2433 | Drivers Seat Belt Buckle Switch Circuit Short to Battery Fault | Go to Pinpoint Test AT . |
| B2434 | Drivers Seat Belt Buckle Switch Circuit Short to Ground Fault | Go to Pinpoint Test AU . |
| B2435 | Drivers Seat Belt Buckle Switch Resistance out of Range Fault | Go to Pinpoint Test AV . |
| B2436 | Passengers Seat Belt Buckle Switch Circuit Open Fault | Go to Pinpoint Test AW . |
| B2437 | Passengers Seat Belt Buckle Switch Circuit Short to Battery Fault | Go to Pinpoint Test AX . |
| B2438 | Passengers Seat Belt Buckle Switch Circuit Short to Ground Fault | Go to Pinpoint Test AY . |
| B2439 | Passengers Seat Belt Buckle Switch Resistance out of Range Fault | Go to Pinpoint Test AZ . |
| B2477 | Module Configuration Failure |
NOTE:
When installing a new RCM, it is necessary to carry out programmable module installation (PMI). REFER to MODULE CONFIGURATION
article. INSTALL a new RCM. REFER to Restraints Control Module (RCM)
. |
| B2855 | Front Crash Sensor Circuit Short to Gnd/VBatt Fault | Go to Pinpoint Test BA . |
| B2856 | Front Crash Sensor ID Fault | Go to Pinpoint Test BB . |
| B2886 | Passenger Side Crash Sensor ID Fault | Go to Pinpoint Test BC . |
| B2887 | Driver Side Crash Sensor ID Fault | Go to Pinpoint Test BD . |
| B2909 | Belt Tension Sensor Fault | Go to Pinpoint Test BE . |
| C1946 | Driver Seat Track Position Sensor Circuit Open Fault | Go to Pinpoint Test BF . |
| C1947 | Driver Seat Track Position Sensor Circuit Short to Ground Fault | Go to Pinpoint Test BG . |
| C1948 | Seat Track Position Sensor Circuit Resistance Out of Range Fault | Go to Pinpoint Test BH . |
| C1981 | Front Driver's Seat Track Position Switch Circuit Fault | Go to Pinpoint Test BI . |
| C1982 | Seat Track Position Switch Circuit Short to VBatt Fault | Go to Pinpoint Test BJ . |
| U0073 DTC U0073 can only be retrieved as a continuous fault. | Control Module Communication Bus Off | Go to Pinpoint Test BK . |
| U1900 | CAN Communication Bus Fault - Receive Error | Go to Pinpoint Test BL . |
| U2017 | Driver Side Crash Sensor Communication Fault | Go to Pinpoint Test BM . |
| U2018 | Passenger Side Crash Sensor Communication Fault | Go to Pinpoint Test BN . |
| - | No communication with the restraints control module (RCM) | REFER to MODULE COMMUNICATIONS NETWORK article to diagnose the communication concern. |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.