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 MANUALSFORD2007FOCUS SES, 4D SEDAN, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 862 (ENGINE CONTROLS - POWERTRAIN DTC CHARTS AND DESCRIPTIONS - (HYBRID))DTC DIAGNOSISU0129 (TCM) - LOST COMMUNICATION WITH BRAKE SYSTEM CONTROL MODULE
2007 Ford Focus SES, 4D Sedan, Standard
U0129 (TCM) - Lost Communication With Brake System Control Module
2007 Ford Focus SES, 4D Sedan, StandardSECTION U0129 (TCM) - Lost Communication With Brake System Control Module
WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
U0129 (TCM) - LOST COMMUNICATION WITH BRAKE SYSTEM CONTROL MODULE
| Description: | The transaxle control module (TCM) continuously monitors the controller area network (CAN) for messages from the antilock braking system (ABS) module. This DTC is set when the TCM fails to receive the ABS message within the defined amount of time. | |||
| Possible Causes: | See the possible causes for DTC U0073. | |||
| Diagnostic Aids: | See the diagnostic aids for DTC U0001. | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory | |
| All | Refer to MODULE COMMUNICATIONS NETWORK . | |||
RENDER: 1.0x
NO RELATED
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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.