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Home >> Mazda >> 2002 >> Tribute LX, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 59 (Engine Controls - Self-Diagnostics) >> Diagnostic Tests >> DTC P0138 Or DTC P0158 >> Detection Condition

Detection Condition

WARNING: This page is about a different car, the 2003 Mazda MPV and 2002 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.

DTC is set when rear HO2S signal voltage is more than .45 volt for 6 seconds during deceleration fuel cut. This is a continuous monitor. MIL illuminates if PCM detects malfunction in 2 consecutive drive cycles.

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