DTC U0433: 00 Abnormal Message From Rear Body Control Module (RBCM): Notes

DTC U0433:00 DETECTION CONDITION AND POSSIBLE CAUSES (SKYACTIV-G 2.0, SKYACTIV-G 2.5)

DTC U0433:00	Abnormal message from rear body control module (RBCM)
DETECTION CONDITION	Correct data cannot be received from rear body control module (RBCM). Diagnostic support note This is a continuous monitor (other). The check engine light does not illuminate. FREEZE FRAME DATA (Mode 2)/Snapshot data is not available. DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	Illuminates the TCS/DSC indicator light. Inhibits the TCS (engine control) and DSC controls.
POSSIBLE CAUSE	CAN communication line malfunction between rear body control module (RBCM) and PCM Rear body control module (RBCM) terminal 4G-Instrument cluster terminal C Rear body control module (RBCM) terminal 4J-Instrument cluster terminal E Instrument cluster terminal B-Front body control module (FBCM) terminal 2K Instrument cluster terminal D-Front body control module (FBCM) terminal 2I Front body control module (FBCM) terminal 2P-PCM terminal 2AK Front body control module (FBCM) terminal 2N-PCM terminal 2AL PCM connector or terminals malfunction Instrument cluster connector or terminals malfunction Rear body control module (RBCM) connector or terminals malfunction Rear body control module (RBCM) malfunction Instrument cluster malfunction PCM malfunction
Courtesy of MAZDA MOTORS CORP.