Fault Code U0120
Code meaning, symptoms, possible causes, part number, and estimated cost.
U0120
Lost Communication With Control Module (Starter/Generator Control Module)
This code indicates a loss of communication with the Starter/Generator Control Module. This fault will affect the vehicle's ability to start and/or charge the battery.
Part Details
Part Name
Starter/Generator Control Module
Reference P/N (OEM)
N/A
General part number for this fault code — not necessarily for your specific vehicle
Estimated Cost
₪900 - ₪3500
Engine Location
Near the starter or generator
Symptoms
- Vehicle fails to start
- Battery does not charge or discharges
- Check Engine or battery warning light on
- Start/Stop system inoperative
Possible Causes
- 1Faulty SGCM module
- 2Damaged wiring or connectors
- 3CAN BUS communication issue
- 4Module power supply issue
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