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Home >> Mazda >> 2017 >> CX-5 Grand Select, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 138 (On-Board Diagnostic - Engine Control (3 Of 5)) >> DTC P0421; Pcm Catalytic Converter System >> PID Item/Simulation Item Used In Diagnosis

PID Item/Simulation Item Used In Diagnosis

WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
PID/DATA MONITOR ITEM SPECIFICATION

Item Definition Unit Condition/Specification
O2S11 A/F sensor current μA
  • Idle (after warm up): Approx. -39 μA
  • Deceleration fuel cut (accelerator pedal released from engine speed of 4, 000 rpm or more): Approx. 3.84 mA
O2S12 HO2S voltage V
  • Idle (after warm up): 0-1.0 V
  • Deceleration fuel cut (accelerator pedal released from engine speed of 4, 000 rpm or more): Approx. 0 V
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