Code No. P0030: Air/Fuel Ratio Sensor (Lambda Sensor) Heater


DIAGNOSIS CONTENT



TROUBLE JUDGMENT


Check Condition
  • Air/fuel ratio sensor (Lambda sensor) heater operation mode.
Judgment Criterion
  • Open circuit of air/fuel ratio sensor (Lambda sensor) heater circuit.

DIAGNOSIS CONTENT



TROUBLE JUDGMENT


Check Condition
  • Air/fuel ratio sensor (Lambda sensor) heater operation mode.
Judgment Criterion
  • The power stage has excess temperature.

PROBABLE CAUSE



  • Failed air/fuel ratio sensor (Lambda sensor) heater
  • Failed electrical harness in air/fuel ratio sensor (Lambda sensor) heater circuit