U0100 MERCURY - Lost Communication With Powertrain Control Module
- Faulty Powertrain Control Module (PCM)
- PCM harness is open or shorted
- PCM circuit poor electrical connection
- Engine Light ON (or Service Engine Soon Warning Light)
U0100 Mercury DescriptionThe Powertrain Control Module (PCM) communicates with the scan tool through the High Speed Controller Area Network (HS-CAN). The U0100 code sets in continuous memory if data messages received from the PCM over the High Speed Controller Area Network (HS-CAN) are missing for greater than 5 seconds.
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