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DTC U0001 88/U0155 00: Module Communication Error: Notes

WARNING: This page is about a different car, the 2014 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
DTC U0001 88/U0155 00 - DETECTION CONDITIONS AND POSSIBLE CAUSES (TWO-STEP DEPLOYMENT CONTROL SYSTEM)

System malfunction location 
  • U0001:88: Module communication error (HS-CAN) 
  • U0155:00: Communication error with Instrument cluster 
Detection condition  U0001:88 
  • The SAS control module detects a CAN communication line (HS-CAN) error.

U0155:00 
  • The SAS control module could not receive CAN signal from the instrument cluster for 5 s  or more.
Fail-safe function  Not applicable
Possible cause 
  • Malfunction in CAN bus communication line
  • Malfunction in CAN line between the SAS control module and instrument cluster
System wiring diagram  Not applicable
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