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Home >> Mazda >> 2021 >> 3 Select, 4D Hatchback, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Headlights >> On-Board Diagnostic - Auto Leveling Control Module >> DTC U0122-87: COMMUNICATION ERROR WITH DSC HU/Control Module [AUTO LEVELING CONTROL MODULE (US)] >> Outline
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DTC U0122-87: COMMUNICATION ERROR WITH DSC HU/Control Module [AUTO LEVELING CONTROL MODULE (US)]: Outline

DTC U0122:87 (AUTO LEVELING CONTROL MODULE - US) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location Communication error with DSC HU/Control Module
Detection condition  
  • The auto leveling control module cannot receive CAN signal from the DSC HU/Control Module.
Fail-safe  
  • The headlight leveling actuator is stopped at the position when the malfunction is determined.
Possible cause  
  • Malfunction in CAN communication line between DSC HU/Control Module and auto leveling control module
System wiring diagram Not applicable