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 MANUALSFORD2004MUSTANG BASE, 2D COUPE, 3.9 6, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 2540 (ENGINE CONTROLS - POWERTRAIN DTC CHARTS & DESCRIPTIONS - DTC P164B THROUGH DTC UXXXX - (EXCEPT DIESEL & HYBRID))DTC U0140: LOST COMMUNICATION WITH BODY CONTROL MODULE
2004 Ford Mustang Base, 2D Coupe, 3.9 6, Automatic
DTC U0140: Lost Communication With Body Control Module
2004 Ford Mustang Base, 2D Coupe, 3.9 6, AutomaticSECTION DTC U0140: Lost Communication With Body Control Module
WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2011 Mercury Milan, 2011 Mercury Mariner, 2011 Mercury Grand Marquis, 2011 Lincoln Town Car, and 2011 Lincoln Navigator L. However, it is still accessible from the selected car via links, so may be relevant.
U0140 - LOST COMMUNICATION WITH BODY CONTROL MODULE
| Description: | The powertrain control module (PCM) continuously monitors controller area network (CAN) for messages from body control module (BCM). This DTC sets when the PCM does not receive the BCM message within the defined amount of time. | ||
| Possible Causes: |
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| Diagnostic Aids: | Check for other PCM DTCs or PCM related symptoms. Diagnose all other PCM DTCs or PCM related symptoms first. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST QA . | ||
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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.