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DTC P0030:00: Notes

DTC P0030:00 (MZR 1.5) DETECTION CONDITION AND POSSIBLE CAUSES

DTC P0030:00 A/F sensor heater control circuit problem
DETECTION CONDITION 
  • If the A/F sensor impedance is 44 ohms or more  for 20 s or more  even though the A/F sensor heater control is operated for 200 s  .

    Diagnostic support note 

  • This is an intermittent monitor (A/F sensor heater, HO2S heater).
  • The MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
  • PENDING CODE is available if the PCM detects the above malfunction condition during first drive cycle.
  • FREEZE FRAME DATA (Mode 2)/Snapshot data is available.
  • The DTC is stored in the PCM memory.
POSSIBLE CAUSE 
  • A/F sensor connector or terminals malfunction
  • A/F sensor heater malfunction
  • PCM connector or terminals malfunction
  • PCM malfunction
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