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Home >> Chrysler >> 2003 >> PT Cruiser Base, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0031: O2 Sensor 1/1 Heater Circuit Low & P0037: O2 Sensor 1/2 Heater Circuit Low >> Monitored & Set Conditions

Monitored & Set Conditions

The sensors are monitored for a low setting when the battery voltage is above 10.6 volts, ASD is powered up and O2 heater is on. DTC is set when desired state does not match actual state.