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Home >> Mazda >> 2014 >> 3 SV, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (On-Board Diagnostic - Automatic Transaxle) >> DTC U0442: 00 Invalid Data Received From Pcm (Local Can Between TCM And Pcm) >> Notes

DTC U0442: 00 Invalid Data Received From Pcm (Local Can Between TCM And Pcm): Notes

WARNING: This page is about a different variant/trim than selected.
DTC U0442:00 DETECTION CONDITIONS AND POSSIBLE CAUSES (FW6A-EL)

DTC U0442:00  Invalid data received from PCM (local CAN between TCM and PCM) 
DETECTION CONDITION 
  • Under the following condition, the TCM detects the invalid PCM signal for 0.5 s: 
    • Battery voltage is 10 V or more. 

Diagnostic support note 
  • The check engine light does not illuminate.
  • The automatic transaxle warning light does not illuminate.
  • PENDING CODE is available.
  • FREEZE FRAME DATA is not available.
  • DTC is stored in the TCM memory.
FAIL-SAFE FUNCTION 
  • Set to TCC control.
  • Inhibits learning control.
  • Inhibits manual mode.
  • Inhibits neutral idle control.
  • Inhibits 5GR and 6GR.
  • Inhibits shift down when the accelerator pedal is depressed.
POSSIBLE CAUSE 
  • PCM DTC is stored.
SYSTEM WIRING DIAGRAM  Not applicable
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