LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mazda >> 2021 >> 3 Select, 4D Hatchback, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> On-Board Diagnostic - Vehicle Control Module (2 Of 2) >> DTC U2033-00: Calibration Data Communication Error With Rear Side Radar Sensor (RH) [Vehicle Control Module] >> Outline
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC U2033-00: Calibration Data Communication Error With Rear Side Radar Sensor (RH) [Vehicle Control Module]: Outline

DTC U2033:00 [VEHICLE CONTROL MODULE] DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location Calibration data communication error with rear side radar sensor (RH)
Detection condition
  • The vehicle control module (VCM) detects that the rear side radar sensor (RH) cannot receive the calibration data from the vehicle control module (VCM) for 10 s.
Fail-safe (See DTC TABLE [VEHICLE CONTROL MODULE (US)] .)
Possible cause
NOTE:
  • Depending on the module, after the ignition is switched ON (engine off or on) or OFF, there is a module that needs 30 s to correctly write the calibration data and configuration data.
  • Calibration error
  • The vehicle control module (VCM) or body control module (BCM) stores DTCs.
    • Vehicle control module (VCM) or body control module (BCM) communication error or internal malfunction
  • DTCs are stored in the rear side radar sensor (RH).
  • CAN circuit communication error between vehicle control module (VCM) and rear side radar sensor (RH)
  • Rear side radar sensor (RH) malfunction
  • Vehicle control module (VCM) malfunction (built into body control module (BCM))
System wiring diagram Not applicable
Connector diagram Not applicable