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Fiat
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2016
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500 Turbo, Standard Trans
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Repair and Diagnosis
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External Pages
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Different car
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Section 99 (Body Control Module (BCM) - DTCS B226A-00 To U1493-00 - 500 - Electric)
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DTC Troubleshooting
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U121B-00-Lost Communication With Vehicle Tracking Module (Telematics Control Unit)
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Possible Causes
Possible Causes
WARNING:
This page is about a different car, the 2015 Fiat 500. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
TELEMATICS CONTROL UNIT (TCU) POWERS AND GROUNDS
TELEMATICS CONTROL UNIT (TCU)
BOTH CAN B BUS CIRCUITS OPEN