Contents Wiring diagrams Section: Testing & Diagnostics All sections

DTC P0138 OR DTC P0158 Mazda 6 GG

Code Definition

  1. DTC P0138: Right Rear HO2S Circuit - High Input
  2. DTC P0158: Left Rear HO2S Circuit - High Input

Note. Right rear HO2S is identified as O2S12 and left rear HO2S is identified as O2S22.