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.
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HOMESERVICE MANUALSFORD2010FOCUS S, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSDTC INDEXMULTIFUNCTION ELECTRONIC MODULES DTCSSMART JUNCTION BOX (SJB) DTC LIST
2010 Ford Focus S, Standard
Smart Junction Box (SJB) DTC List
2010 Ford Focus S, StandardSECTION Smart Junction Box (SJB) DTC List
Smart Junction Box (SJB) DTC List
| DTC | Description | Action |
|---|---|---|
| B106C | Tire Pressure Monitor System (TPMS ) Low Frequency Subsystem Fault | DISREGARD the DTC. It is not applicable to this vehicle. The Smart Junction Box (SJB) may be incorrectly configured or the SJB may be at fault. CHECK the configuration of the SJB . CLEAR the DTCs. REPEAT the self-test. REFER to MODULE CONFIGURATION . |
| B106E | Solid State Driver Disabled Due to Short Circuit | GO to PINPOINT TEST A . |
| B106F | Module Disabled Due to External Fault | GO to PINPOINT TEST A . |
| B1317 | Battery Voltage High | GO to PINPOINT TEST B . |
| B1318 | Battery Voltage Low | GO to PINPOINT TEST C . |
| B1342 | ECU is Faulted | CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved again, INSTALL a new SJB . REFER to SMART JUNCTION BOX (SJB) . TEST the system for normal operation. |
| B2477 | Module Configuration Failure | REFER to MODULE CONFIGURATION . |
| C2780 | ECU in Manufacturer Sub-State |
NOTE:
If DTC B2477 is also present, refer to the Action for DTC B2477 in this DTC chart. This DTC is only present when a new SJB
is installed, or the SJB is configured. REFER to
WHEELS & TIRES
to carry out the Tire Pressure Monitoring System (TPMS) Sensor Training, then CARRY OUT the SJB
self-test to clear this DTC. |
| P062F | Internal Control Module EEPROM Error | CLEAR the DTCs. REPEAT the self-test. If DTC P062F is retrieved again, INSTALL a new SJB . REFER to SMART JUNCTION BOX (SJB) . |
| U0155 | Lost Communication With Instrument Panel Cluster (IC ) Control Module | GO to PINPOINT TEST D . |
| U2050 | No Application Present | CONFIGURE the SJB . REFER to MODULE CONFIGURATION . CLEAR the DTCs. REPEAT the self-test. If DTC U2050 is retrieved again, INSTALL a new SJB . REFER to SMART JUNCTION BOX (SJB) . TEST the system for normal operation. |
| U2473 | Unexpected Vehicle Speed (VSS ) | Sets during the self-test if the vehicle speed exceeds 5 km/h (3 mph), or if the vehicle speed cannot be determined. |
| All other DTCs | - | REFER to DIAGNOSTIC TROUBLE CODE (DTC) CHART . |
RENDER: 1.0x
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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.