P0038 Atención pronto

HO2S Heater Control Circuit High

Powertrain

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Descripción

This code means the heater circuit for one of your oxygen sensors is getting too much voltage. The oxygen sensor's heater helps it warm up quickly to monitor exhaust gases more effectively.

Causas comunes

  • Faulty oxygen sensor heater circuit
  • Wiring issue to the oxygen sensor
  • Blown fuse for the oxygen sensor heater
  • PCM (Powertrain Control Module) issue

Síntomas

  • Check Engine Light is on
  • Reduced fuel economy
  • Rough idling

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