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Указател на кодовете за грешки · medium

P0038

HO2 Sensor heater control circuit high resistance – bank 1, downstream (1/2)

HO2 Sensor heater control circuit high resistance – bank 1, downstream (1/2)

Documented for: 2.0L gasoline; 2.5L/3.0L gasoline · System(s): EMS EOBD, EMS OBD II · Factory MIL flag: 2

Common causes

  • HO2 Sensor 1/2 heater control circuit: open circuit
  • high resistance HO2 Sensor 1/2 heater failure

Quick checks

  • Confirm freeze-frame and conditions when the code set
  • Inspect connectors, grounds, and harness for the circuit named in the code
  • Compare live sensor values vs expected (unplugged/biased sensors are common)

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