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Home >> Mazda >> 2002 >> MX-5 Miata Base, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0134: Front Heated Oxygen Sensor Circuit No Activity Detected >> Detection Condition

Detection Condition

DTC is set when Powertrain Control Module (PCM) monitors input voltage from front Heated Oxygen Sensor (HO2S). If input voltage from front HO2Snever exceed 0.55 volt for 54.2 seconds, PCM determines that sensor circuit is not activated when drive mode 3 and following conditions are met:

This is a continuous monitor (CCM). MIL illuminates if PCM detects malfunction condition in 2 consecutive drive cycles. Pending code is available if PCM detects malfunction condition during first drive cycle. Freeze Frame Data is available and DTC is stored in the PCM memory.

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