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Home >> Mazda >> 2014 >> 3 SV, Standard Trans >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> On-Board Diagnostic - Front Body Control Module >> DTC U0401 68: Error Signal Received From Pcm >> Notes
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DTC U0401 68: Error Signal Received From Pcm: Notes

DTC U0401 68 DETECTION CONDITION AND POSSIBLE CAUSE

Description  Error signal received from PCM 
Detection condition 
  • Front body control module (FBCM) receives the error ECT sensor or ambient temperature sensor signals from the PCM for 5 s or more  with the ignition switched ON (engine off or on).
Fail-safe function  Not applicable
Possible cause 
  • ECT sensor malfunction
  • Ambient temperature sensor malfunction
  • PCM malfunction
  • Front body control module (FBCM) malfunction
System wiring diagram  Not applicable