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OBDII Code List
 
U0100 MERCURY

U0100 MERCURY - Lost Communication With Powertrain Control Module

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty Powertrain Control Module (PCM)
  • PCM harness is open or shorted
  • PCM circuit poor electrical connection

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

U0100 Mercury Description

The 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.
OBDII Code U0100 Mercury - Lost Communication With Powertrain Control Module - AutoCodes.com

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U0100 MERCURY Comments

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