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.
2009 Ford Focus S, AutomaticFACTORY OEM SERVICE PROCEDURE
ABS Module DTC Chart
ABS MODULE DIAGNOSTIC TROUBLE CODES (DTC) LIST
| DTC | Description | Source | Action |
|---|---|---|---|
| B1342 | ECU is Defective | ABS Module |
NOTE:
If other DTCs are present, REPAIR them before installing a new component. CLEAR the DTCs. REPEAT the self-test. RETRIEVE the DTCs. If DTC B1342 is retrieved, INSTALL a new module. REFER to Anti-Lock Brake System (ABS) Module
. |
| B1483 | Brake Pedal Input Circuit Failure | ABS Module |
NOTE:
If DTC U0100 is also present, diagnose U0100 first. Go to Pinpoint Test B
. |
| B1676 | Battery Pack Voltage Out Of Range | ABS Module | Go to Pinpoint Test A . |
| C1095 | ABS Hydraulic Pump Motor Circuit Failure | ABS Module | Go to Pinpoint Test C . |
| C1145 | RF Wheel Speed Sensor Input Circuit Failure | ABS Module | Go to Pinpoint Test D . |
| C1155 | LF Wheel Speed Sensor Input Circuit Failure | ABS Module | Go to Pinpoint Test D . |
| C1165 | RR Wheel Speed Sensor Input Circuit Failure | ABS Module | Go to Pinpoint Test D . |
| C1175 | LR Wheel Speed Sensor Input Circuit Failure | ABS Module | Go to Pinpoint Test D . |
| C1233 | LF Wheel Speed Input Signal Missing | ABS Module | Go to Pinpoint Test E . |
| C1234 | RF Wheel Speed Input Signal Missing | ABS Module | Go to Pinpoint Test E . |
| C1235 | RR Wheel Speed Input Signal Missing | ABS Module | Go to Pinpoint Test E . |
| C1236 | LR Wheel Speed Input Signal Missing | ABS Module | Go to Pinpoint Test E . |
| U0001 | High Speed CAN Communication Bus | ABS Module | REFER to MODULE COMMUNICATIONS NETWORK article to diagnose the high-speed controller area network (HS-CAN) bus. |
| U0100 | Lost Communication With ECM/PCM | ABS Module | REFER to MODULE COMMUNICATIONS NETWORK article to diagnose the HS-CAN bus. |
| U0140 | Lost Communication With Body Control Module | ABS Module | REFER to MODULE COMMUNICATIONS NETWORK article to diagnose the HS-CAN bus. |
| U0401 | Invalid Data Received From ECM/PCM | ABS Module | REFER to MODULE COMMUNICATIONS NETWORK article to diagnose the HS-CAN bus. |
| U2050 | No Application Present | ABS Module | CONFIGURE the ABS module. REFER to Programmable Module Installation in MODULE CONFIGURATION article. CLEAR the DTCs. CARRY OUT the ABS module self-test. If DTC U2050 is retrieved again, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . CLEAR the DTC. REPEAT the self-test. |
Factory Service Tools
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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.