U0140 SATURN - Lost Communication With Body Control Module
U0140 SATURN Possible Causes
- Faulty Body Control Module (BCM)
- Body Control Module harness is open or shorted
- Body Control Module circuit poor electrical connection
How do I fix code U0140 SATURNCheck the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
Cost of diagnosing the U0140 SATURN code
Labor: 1.0The cost of diagnosing the U0140 SATURN code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
- Engine Light ON (or Service Engine Soon Warning Light)
U0140 Saturn DescriptionModules connected to the high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. The modules have prerecorded information about what messages are needed to be exchanged on the serial data circuits, for each virtual network. The messages are supervised and also, some periodic messages are used by the receiver module as an availability indication of the transmitter module. The supervision time-out period is 250 ms. Each message contains the identification number of the transmitter module. The Diagnostic Trouble Code (DTC) sets when a periodic message from the Body Control Module (BCM) has not been received.
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