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Home >> Mazda >> 2000 >> MX-5 Miata Base, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P1136: Front O2 Sensor Heater Circuit High >> Condition

DTC P1136: Front O2 Sensor Heater Circuit High: Condition

PCM controls ground for O2 sensor heater. DTC is set if PCM detects voltage is more than 11.5 volts when ground is supplied to heater. Possible causes are:

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