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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 P0052: Left Front Ho2S Heater Circuit High >> 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.

PCM monitors control signal at terminal No. 94. If PCM turns on left front HO2S heater (grounds circuit) and circuit has high voltage, DTC is set. This is a continuous monitor. MIL illuminates if PCM detects malfunction in 2 consecutive drive cycles. Left front HO2S heater is controlled by a duty signal.

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